An architectural relic that survived the hands of time.

This remarkably well-preserved mosque stands amid an 11th-century caravansary.

A geological bull's-eye visible from outer space.

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

Unusual carved mural of “barefoot diva” Cesária Évora, icon of Cape Verdean morna music.

The defense built to protect one of the last found pieces of land on Earth.

A 19th-century architectural masterpiece with ties to Gustave Eiffel.

A tree seems to grow from the ocean floor on this strange strip of sand slowly being overtaken by the sea.

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

This deceptively salty lake looks like blushing pink lemonade.