Visitors walk in the old city of Bonifacio illuminated during the "Festi Lumi" light festival on the French Mediterranean island of Corsica, on July 6, 2019. - The 6th edition of Festi Lumi takes place from July 4 to July 6, 2019. (Photo by PASCAL POCHARD-CASABIANCA / AFP)

People look at light projections in the old city of Bonifacio during the "Festi Lumi" light festival on the French Mediterranean island of Corsica, on July 6, 2019. - The 6th edition of Festi Lumi takes place from July 4 to July 6, 2019. (Photo by PASCAL POCHARD-CASABIANCA / AFP)

A picture taken on July 6, 2019 shows the old city of Bonifacio illuminated during the "Festi Lumi" light festival on the French Mediterranean island of Corsica. - The 6th edition of Festi Lumi takes place from July 4 to July 6, 2019. (Photo by PASCAL POCHARD-CASABIANCA / AFP)

A picture taken on July 6, 2019 shows the old city of Bonifacio illuminated during the "Festi Lumi" light festival on the French Mediterranean island of Corsica. - The 6th edition of Festi Lumi takes place from July 4 to July 6, 2019. (Photo by PASCAL POCHARD-CASABIANCA / AFP)

A picture taken on July 6, 2019 shows the old city of Bonifacio illuminated during the "Festi Lumi" light festival on the French Mediterranean island of Corsica. - The 6th edition of Festi Lumi takes place from July 4 to July 6, 2019. (Photo by PASCAL POCHARD-CASABIANCA / AFP)

Visitors walk in the old city of Bonifacio illuminated during the "Festi Lumi" light festival on the French Mediterranean island of Corsica, on July 6, 2019. - The 6th edition of Festi Lumi takes place from July 4 to July 6, 2019. (Photo by PASCAL POCHARD-CASABIANCA / AFP)

Visitors walk in the old city of Bonifacio illuminated during the "Festi Lumi" light festival on the French Mediterranean island of Corsica, on July 6, 2019. - The 6th edition of Festi Lumi takes place from July 4 to July 6, 2019. (Photo by PASCAL POCHARD-CASABIANCA / AFP)

People look at light projections in the old city of Bonifacio during the "Festi Lumi" light festival on the French Mediterranean island of Corsica, on July 6, 2019. - The 6th edition of Festi Lumi takes place from July 4 to July 6, 2019. (Photo by PASCAL POCHARD-CASABIANCA / AFP)

People take smartphone pictures of light projections in the old city of Bonifacio during the "Festi Lumi" light festival on the French Mediterranean island of Corsica, on July 6, 2019. - The 6th edition of Festi Lumi takes place from July 4 to July 6, 2019. (Photo by PASCAL POCHARD-CASABIANCA / AFP)

People take smartphone pictures of light projections in the old city of Bonifacio during the "Festi Lumi" light festival on the French Mediterranean island of Corsica, on July 6, 2019. - The 6th edition of Festi Lumi takes place from July 4 to July 6, 2019. (Photo by PASCAL POCHARD-CASABIANCA / AFP)