Bulgaria, Nessebar, Hagia Sophia Basilica, also known as St Sophia Church and The Old Bishopric.

Bulgaria, Nessebar, Arch and walls, Hagia Sophia Basilica, also known as St Sophia Church and The Old Bishopric.

Spain, Andalucia, Cordoba, Arched dooways to the Mezquita Cathedral.

Spain, Andalucia, Cordoba, Arched doorway to the Mezquita Cathedral.

Spain, Andalucia, Cordoba, Arched dooways to the Mezquita Cathedral.

Spain, Andalucia, Cordoba, Arched doorway to the Mezquita Cathedral.

Spain, Andalucia, Cordoba, Arched doorway to the Mezquita Cathedral.

Uzbekistan, Samarkand, Entrance to Shah-i-Zinda, also known as Shah I Zinda and Shah-i Zinda.

Uzbekistan, Samarkand, Entrance to Shah-i-Zinda, also known as Shah I Zinda and Shah-i Zinda.

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

Uzbekistan, Bukhara, Ulugh Beg Madrasah at the Memorial Complex of Al Gijduvani, Gijduvan.

Uzbekistan, Bukhara, Building in Bakhauddin Naqshband Complex, also known as Memorial of Baha Ad Din Naqshband.