Overview of Persepolis from Tomb of Artaxerxes III, Palace of 100 Columns in foreground, UNESCO World Heritage Site, Iran, Middle East

Tombs of Ataxerxes I and Darius the Great, Naqsh-e Rostam Necropolis, near Persepolis, Iran, Middle East

Overview of Persepolis from Tomb of Artaxerxes III, Palace of 100 Columns in centre, Treasury in foreground, UNESCO World Heritage Site, Iran, Middle East

Tombs of Darius II, Ataxerxes I and Darius the Great, Naqsh-e Rostam Necropolis, near Persepolis, Iran, Middle East

Tourists walking in front of Tomb of Darius the Great, Naqsh-e Rostam Necropolis, near Persepolis, Iran, Middle East

Tomb of Ataxerxes I and carved relief below, Naqsh-e Rostam Necropolis, near Persepolis, Iran, Middle East

Carved relief of the Investiture of Ardashir I, 224-239 AD, Naqsh-e Rostam Necropolis, near Persepolis, Iran, Middle East

Carved relief of the Investiture of Narse, 294-302 AD, to the lower right of the Tomb of Darius the Great, Naqsh-e Rostam Necropolis, Iran, Middle East

Tiling on facade, Aramgah-e Shah-e Cheragh (Mausoleum of the King of Light), Shiraz, Iran, Middle East

Isola Bella, Borromean Islands, Stresa, Lake Maggiore, Italian Lakes, Piedmont, Italy, Europe

Isola dei Pescatori, from Isola Bella, Borromean Islands, Lake Maggiore, Piedmont, Italian Lakes, Italy, Europe

Lily pond, Isola Bella, Borromean Islands, Stresa, Lake Maggiore, Italian Lakes, Piedmont, Italy, Europe

Floral terraces, Isola Bella, Lake Maggiore, Stresa, Borromean Islands, Italian Lakes, Piedmont, Italy, Europe

Floral Fountains, Isola Bella, Borromean Islands, Lake Maggiore, Piedmont, Italian Lakes, Italy, Europe

Floral Fountains, Isola Bella, Borromean Islands, Lake Maggiore, Piedmont, Italian Lakes, Italy, Europe

Isola dei Pescatori, from Isola Bella, Borromean Islands, Lake Maggiore, Piedmont, Italian Lakes, Italy, Europe

Royal Palace, Isola Bella, Borromean Islands, Lake Maggiore, Piedmont, Italian Lakes, Italy, Europe

Isola Bella, Borromean Islands, Lake Maggiore, Italian Lakes, Piedmont, Italy, Europe

Isola Bella and Isola dei Pescatori, Borromean Islands, Lake Maggiore, Piedmont, Italian Lakes, Italy, Europe

Canal, Otaru City, Hokkaido Prefecture, Japan, Asia

Town Hall, Sintra, UNESCO World Heritage Site, Portugal, Europe

Upper Part of Gothic Fountan in foreground with Town Hall Tower in background, Sintra, UNESCO World Heritage Site, Portugal, Europe

Church of the Exaltation of the Holy Cross, Almaty, Kazakhstan, Central Asia, Asia

Patagonian Sierra Finch (Phrygilus patagonicus), Patagonia, Chile, South America

Guanaco (Lama Guanicoide), Patagonia, Chile, South America

Atlantic Ocean, coast near Lisbon, Portugal, Europe

Interior, Aramgah-e Shah-e Cheragh (Mausoleum of the King of Light), Shiraz, Iran, Middle East

Ceiling in the mosque, Aramgah-e Shah-e Cheragh (Mausoleum of the King of Light), Shiraz, Iran, Middle East

Spice shop, Bazaar-e Vakil (Regent's Bazaar), Shiraz, Iran, Middle East

One of the holiest Shiite sites, Aramgah-e Shah-e Cheragh (Mausoleum of the King of Light), Shiraz, Iran, Middle East

Mullah crossing the courtyard of Madraseh-ye Khan, Shiraz, Iran, Middle East

Jewish shopkeeper, Bazaar-e Vakil (Regent's Bazaar), Shiraz, Iran, Middle East

Mirrored reception hall, Khan-e Zinat al-Molk, Qavam al-Molk family's private quarters, Shiraz, Iran, Middle East

Mirrored reception hall ceiling, Khan-e Zinat al-Molk, Qavam al-Molk family's private quarters, Shiraz, Iran, Middle East

Bagh-e Narajestan (Citrus Garden), Shiraz, Iran, Middle East

Pavilion in Bagh-e Narajestan (Citrus Garden), Shiraz, Iran, Middle East

Bagh-e Narajestan (Citrus Garden), Shiraz, Iran, Middle East

Ceiling of Tomb of Hafez, Iran's most famous poet, 1325-1389, Shiraz, Iran, Middle East

Painted woodwork on the ceiling, Pavilion, Bagh-e Narajestan (Citrus Garden), Shiraz, Iran, Middle East

Reflections in mirrored reception hall, Khan-e Zinat al-Molk, Qavam al-Molk family's private quarters, Shiraz, Iran, Middle East

Women and child gathered, interior, Aramgah-e Shah-e Cheragh (Mausoleum of the King of Light), Shiraz, Iran, Middle East

Young woman torn between her mobile and her religious reading, Aramgah-e Shah-e Cheragh (Mausoleum of the King of Light), Shiraz, Iran, Middle East

Poetry lovers paying respects at Tomb of Hafez, Iran's most famous poet, 1325-1389, Shiraz, Iran, Middle East

Family taking a selfie in Bagh-e Narajestan (Citrus Garden), Shiraz, Iran, Middle East

Ascona, Locarno, Lake Maggiore, Ticino, Switzerland, Europe

Old Harbour, Ascona, Locarno, Lake Maggiore, Ticino, Switzerland, Europe

Madonna del Sasso, Monastery, Orselina, Locarno, Lake Maggiore, Ticino, Switzerland, Europe

Cargo ship, Otaru Port, Hokkaido Prefecture, Japan, Asia

Cargo ship, Otaru Port, Hokkaido Prefecture, Japan, Asia

Canal tour boat, Otaru City, Hokkaido Prefecture, Japan, Asia

Queens Terrace in foreground and Clock Tower, Penna National Palace, Sintra, UNESCO World Heritage Site, Portugal, Europe

Chapel in foreground and clocktower in background, Penna National Palace, Sintra, UNESCO World Heritage Site, Portugal, Europe

Overview, taken from High Cross Area, Penna National Palace, Sintra, UNESCO World Heritage Site, Portugal, Europe

Newt, mythical creature, Penna National Palace, Sintra, UNESCO World Heritage Site, Portugal, Europe

Altyn Shanyrak monument, Independence Park, Shymkent, South Region, Kazakhstan, Central Asia, Asia

Entrance of the Independence Park, Shymkent, South Region, Kazakhstan, Central Asia, Asia

Entrance of the Independence Park, Shymkent, South Region, Kazakhstan, Central Asia, Asia

Granite obelisk, Independence Park, Shymkent, South Region, Kazakhstan, Central Asia, Asia

Black Chested Buzzard Eagle (Geranoates Melanoleucus), Patagonia, Chile, South America

Graca Church, one of the city's oldest, built in 1271 with a Baroque interior and 17th century tiles, Lisbon, Portugal, Europe

Aerial view of apartment and office buildings, Central Tehran, Iran, Middle East

Aerial view of yet another traffic jam, Tehran, Iran, Middle East

Aerial view of Tehran facing North towards the Alborz Mountains, Tehran, Iran, Middle East

Crowds at entrance of main Tehran Bazaar, Tehran, Iran, Middle East

Ivan-e Takht-e Marmar (Marble Throne Verandah), Golestan Palace, UNESCO World Heritage Site, Tehran, Iran, Middle East

Gardens of Golestan Palace, UNESCO World Heritage Site, Tehran, Iran, Middle East

Two soldiers taking a selfie with a street performer, Tehran, Iran, Middle East

Multi-storied section of main Tehran Bazaar, Tehran, Iran, Middle East

African elephant (Loxodonta africana), Zimanga private game reserve, KwaZulu-Natal, South Africa, Africa

Giraffe (Giraffa camelopardalis) feeding, Kruger National Park, South Africa, Africa

Torres del Paine, Patagonia, Chile, South America

Cinnamon bellied ground tyrant (Muscisaxicola capistrata), Patagonia, Chile, South America

Horns of Paine, Torres del Paine National Park, Patagonia, Chile, South America

Torres del Paine National Park, Patagonia, Chile, South America

Girls on a night out, Darband, Northern Tehran, Iran, Middle East

Food stall, Darband, Northern Tehran, Iran, Middle East

Fortune teller with blue budgie picking from alternative fortunes, Daraband, Northern Tehran, Iran, Middle East

Couple on night out in traditional restaurant, Darband, Northern Tehran, Iran, Middle East

Sitting room, White Palace, the last Shah's Summer Palace, Sa'ad Abad, Tehran, Iran, Middle East

Dining room, White Palace, the last Shah's Summer Palace, Sa'ad Abad, Tehran, Iran, Middle East

Married identical twins, White Palace, the last Shah's Summer Palace, Sa'ad Abad, Tehran, Iran, Middle East

Farm on the Col de la Forclaz, High Alps, Switzerland, Europe

Motor cyclists on the Pass above Martigny, Switzerland, Europe

Ganter Bridge on the Simplon Pass, Switzerland, Europe

Medieval Castle at Sion, Switzerland, Europe

Old Monastery and Retreat, now a Hostelry, situated below the summit of the Simplon Pass, 2005m, Switzerland, Europe

Main House, Quinta da Regaleira, Sintra, UNESCO World Heritage Site, Portugal, Europe

Sheikh Khalifa al Nahyan Mosque, Shymkent, South Region, Kazakhstan, Central Asia, Asia

Sheikh Khalifa al Nahyan Mosque, Men's prayer room, Shymkent, South Region, Kazakhstan, Central Asia

Traditional Kokpar (buzkashi) in the outskirts of Gabagly National Park, Shymkent, South Region, Kazakhstan, Central Asia

Traditional Kokpar (buzkashi) in the outskirts of Gabagly National Park, Shymkent, South Region, Kazakhstan, Central Asia

Traditional Kokpar (buzkashi) in the outskirts of Gabagly National Park, Shymkent, South Region, Kazakhstan, Central Asia

Climbers on a snowfield approaching the Aiguile du Midi, 3842m, Graian Alps, Chamonix, Haute Savoie, French Alps, France, Europe

Climbers approaching the Tunnel to the Aiguile du Midi, 3842m, Graian Alps, Chamonix, Haute Savoie, French Alps, France, Europe

Climbers approaching the Tunnel to the Aiguile du Midi, 3842m, Graian Alps, Chamonix, Haute Savoie, French Alps, France, Europe

Aiguile du Midi and Mont Blanc, 4809m, and the Glaciers, from the Lake, Chamonix, Haute Savoie, French Alps, France, Europe

City overview, Sintra, UNESCO World Heritage Site, Portugal, Europe

National Palace of Sintra, Sintra, UNESCO World Heritage Site, Portugal, Europe

Aiguile du Midi, 3842m, accessed by cable car from Chamonix, from Les Houches, Graian Alps, Haute Savoie, French Alps, France, Europe

Mont Blanc, 4809m, and the Glaciers, Chamonix, Haute Savoie, French Alps, France, Europe

Town Square, Nuit Saint Georges, Wine area, Beaune, Cote d'Or, Burgundy, France, Europe

Co-Cathedrale Notre Dame de Bourg-en Bresse, Ain, France, Europe

Tamatave, Indian Ocean coast, fishermen with pirogue canoe going out to sea, Madagascar, Africa

Black-and-white ruffed lemur (Varecia variegata), Lake Ampitabe, Pangalanes Lakes, Tamatave, Madagascar, Africa

Dugout canoe on the beach, Tamatave, Indian Ocean coast, Madagascar, Africa

Clouds at sunset, Pangalanes Lakes canal system, Tamatave, eastern area, Madagascar, Africa

Clouds at sunset, Pangalanes Lakes canal system, Tamatave, Madagascar, Africa

Clouds at sunset, Pangalanes Lakes canal system, Tamatave, Madagascar, Africa

Interior, Ascension Cathedral (Zenkov Cathedral), Panfilov Park, Almaty, Kazakhstan, Central Asia, Asia

Ascension Cathedral (Zenkov Cathedral), Panfilov Park, Almaty, Kazakhstan, Central Asia, Asia

Zelyony Bazar (Green Market), Meat Market, Almaty, Kazakhstan, Central Asia, Asia

Ascension Cathedral (Zenkov Cathedral), Almaty, Kazakhstan, Central Asia, Asia

Gaudi's Cathedral of La Sagrada Familia, still under construction, UNESCO World Heritage Site, Barcelona, Catalonia, Spain, Europe

Pangalanes Lakes canal system, fishing nets, Tamatave, eastern area, Madagascar, Africa

Tien Shan Astronomical Observatory, Ile-Alatau National Park, Assy Plateau, Almaty, Kazakhstan, Central Asia, Asia

Tien Shan Astronomical Observatory, Ile-Alatau National Park, Assy Plateau, Almaty, Kazakhstan, Central Asia, Asia

Horses, Ile-Alatau National Park, Tien Shan Mountains, Assy Plateau, Almaty, Kazakhstan, Central Asia, Asia

Ile-Alatau National Park, Assy Plateau, Almaty, Kazakhstan, Central Asia, Asia

Cassis, Les Calanques, Provence, France, Europe

Heterixalus madagascariensis frog inside a flower, Ivoloina Zoological Park, Tamatave, Madagascar, Africa

Panther chameleon (Furcifer pardalis), Ivoloina Zoological Park, Tamatave, Madagascar, Africa

Radiated tortoise, critically endangered in the wild, Ivoloina Zoological Park, Tamatave, Madagascar, Africa

Howling Indri lemur (Indri indri), Analamazaotra Special Reserve, Andasibe, central area, Madagascar, Africa

Howling Indri lemur (Indri indri), Analamazaotra Special Reserve, Andasibe, central area, Madagascar, Africa

Crowned Verreaux's Sifaka (propithecus verreauxi coronatus), Nosy Iranja, northern area, Madagascar, Africa

Crowned Verreaux's Sifaka (propithecus verreauxi coronatus), Nosy Iranja, northern area, Madagascar, Africa

Male black-and-white ruffed lemur (Varecia variegata), Nosy Iranja, northern area, Madagascar, Africa

Nosy Iranja, northern area, Madagascar, Africa