The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

The first museum in the world devoted to sexual gadgetry.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

An important Mayan religious and trading center dating back to 200 BC.

This massive Maya archaeological site is home to the tallest man-made structure in Belize.

A natural swimming hole that was once a ceremonial center for Mayan priests.

This portion of a lovely Belize beach is infested with (harmless) sharks and rays.

A history of European missionaries in Malawi.

The ideal location for an immersive ecological experience.

A prodigious pachyderm lurks among Malawi’s inselbergs.

This bridge was constructed from the rubble of the infamous Bastille.

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

This demon atop the Notre-Dame de Paris looks utterly bored.

Claude Monet was baptized in this lavishly ornate Paris church.

France's most famous cemetery, with some of its most curious tombs.

Take a selfie with one of the area’s founding fathers.

An electrifying collection of gadgets and literature from the 16th through 20th centuries.

Like your grandma's attic—if your grandma were a little weirder, extremely well-traveled, and had a great eye for art.

Defaced since the early 80s, this bridge has become local icon to the metalheads and residents of the city.