LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows the entrance of the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows an inside view of the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows an inside view of the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows bookshelves at the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows people with their laptops at the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows an inside view of the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows people with their laptops at the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows people studying at the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows people with their laptops at the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows people with their laptops at the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows bookshelves at the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows an inside view of the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows a view of the British Library within the "World Book Day" in London, United Kingdom.The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows a view of the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows a view of the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows an inside view of the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows people with their laptops at the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows people with their laptops at the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency

LONDON, UNITED KINGDOM - MARCH 23: A photo taken on March 23, 2018 shows an inside view of the British Library within the "World Book Day" in London, United Kingdom. The British Library is the national library of the United Kingdom and the second largest library in the world by number of items. The collection includes well over 150 million items. World Book Day is an annual event on April 23rd, organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO), to promote reading, publishing and copyright. British Library was formed by King George III of Great Britain in 1753. The Library also has a stamp collection, total of 8 millions. Length of the shelves in the British Library reach 625 km. Kate Green / Anadolu Agency