This natural marble cave is one of only five national monuments in Oregon.

A comprehensive collection of bonsai set in a beautiful campus.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

A hidden three-foot-wide house separates these two regal churches.

The souls of the dead have made these Ghanese crocodiles shockingly docile.

Topless shrine of northern Ghana.

At Ghana's largest wildlife refuge you feel like you're right in the animals' backyard.

Hidden dwellings in the cliffsides of North Togo used by local Moba tribes to evade 18th-century slave traders.

The second-highest village in Lazio has attracted artists for 400 years and is now a spectacular open-air art gallery.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

This luscious masterpiece created by landscape designer Bevis Bawa inspired the work of his brother, a famous Sri Lankan architect.