Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

This blowhole is supposedly caused by a trapped monster.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

A tunnel of hardened lava along Maui’s famous Road to Hana.

This black shoreline is made up of exploded lava particles.

A collection of biblical memorabilia.

A public urinal so pretty, it was declared a national monument.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

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

After local authorities changed the design, the building's architect, Le Corbusier, wanted nothing to do with it.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

Celebrating the works of a beloved Italian actor, known for such cult films as 'They Call Me Trinity' and 'Watch Out, We’re Mad!'

A statue of an astronomer gazes at the sky as a tribute to Caroline Herschel.

A museum specifically dedicated to the Trabant, one of the iconic automobiles of the GDR.

The site where a plot to assassinate Hitler was planned—and its conspirators were executed—is now a powerful memorial to the German resistance during World War II.

A replica of the Liberty Bell rang daily from West Berlin's City Hall throughout the Cold War.

A century-old shot ball factory tower is open to the public once a year.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

This concrete residential area doubles as an open-air gallery.

Metro station with a claim to rock n' roll fame.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.