This Ottoman bridge is a rare covered bridge with shops, and considers itself the only bazaar bridge in the world.

This lonely minaret with an unusual decorative symbol is all that remains of a historic Ottoman mosque.

Though difficult to access, this stunning cave has a place in Scotland's poetic history.

The best-preserved example of a unique structure in Nubian architecture.

These pillars are one of the few remnants from the mysterious lost empire of Makuria.

This cave located in the badlands of Somaliland contains some of the oldest cave art in Africa.