Visit the Hisor Fortress

Moorish palace-fortress of Granada.

The world's largest car-free old city.

One of the world’s largest squares, framed by the tiled masterpieces of Safavid Isfahan.

Remote 65-metre brick minaret, alone in a river gorge since the 12th century.

Labyrinthine Swahili trading town of carved doors and spice bazaars.

Ancient fortified towns of the Mzab.

15th-century mosque at Bagerhat, UNESCO-listed.

Ninth-century mosque with the spiralling Malwiya minaret.