Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

A comprehensive museum dedicated to Africa's oldest modern republic.

Empty since 1989, now falling into ruin.

Home of the ruins of a British slave castle.

After several weeks of radio silence, this abandoned oil tanker washed up on a remote beach in Liberia.

Thousands of colorful pirogues showcase ingenious craftsmanship at the largest fishermen port in Nouakchott.

The largest camel market in West Africa

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

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

An architectural relic that survived the hands of time.

Five ancient libraries, little changed for centuries, preserve a medieval archive of Quranic lore and civic documents

The second largest monolith in the world was once betrayed by its lover, Ben Aicha.

Both an engineering feat and a monument to bad colonial politics.

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

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

A rare chance to ride one of the few continuous elevators still in operation.

From Nazi chemicals to the CIA, this architectural marvel has played a fascinating role in German history.

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.