This set of three large, volcanic hot springs is a favorite haunt for intrepid divers.

A stunning landscape of bunkers that once stored chemical weapons.

This synagogue is the only place of worship for New Delhi’s small Jewish community.

This surreal-looking tree pruned more than 1,000 years ago is still producing olives for oil.

The ruins of a 2,000-year-old Roman fishing village perched on one of the best beaches in Spain.

The hidden ruins of an old hydroelectric plant reclaimed by nature.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

This Michelin-starred restaurant sheds light on a rare period of cultural and culinary tolerance in Cordoba’s past.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

A lush indoor jungle fills this bustling Madrid transportation hub.

An ancient Egyptian temple in the middle of Madrid, Spain.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

A bike being "eaten" by a tree is the real Vashon legend behind popular children's book, "Red Ranger Came Calling."

A health museum containing a 27’’½-foot intestine.