Italy, Sicily, Palermo, The Cathedral.

Italy, Sicily, Palermo, The Cathedral.

Italy, Sicily, Palermo, Fontana Pretoria and Santa Caterina Church, Piazza Pretoria.

Italy, Sicily, Palermo, Fontana Pretoria and Santa Caterina Church, Piazza Pretoria.

Italy, Sicily, Palermo, Fontana Pretoria and Santa Caterina Church, Piazza Pretoria.

Italy, Tuscany, Florence, Florence Cathedral, Cattedrale Di Santa Maria Del Fiore, Piazza Del Duomo.

Italy, Tuscany, Florence, Florence Cathedral, Cattedrale Di Santa Maria Del Fiore, Giottos tower.

Greece, Chios, The Turkish Baths.

Uzbekistan, Samarkand, Alexy Russian Orthodox Church, dome detail.

Uzbekistan, Samarkand, Gur Emir Mausoleum, also known as Gur Amir, Guri Amir, Gur-E Amir, and Gur-I Amir.

Uzbekistan, Samarkand, Bibi Khanym Mosque, also known as Bibi Khanum Mosque.

Uzbekistan, Samarkand, A dome of Bibi Khanym Mosque, also known as Bibi Khanum Mosque.