A scattered trail of street art adds a pop of color to the city's stark structures.

Hidden on a cobblestone street in Glasgow, a Czech Cajovna-inspired teahouse serves as a hangout for Bohemians.

A taste of the macabre Tokyo's ritzy shopping district.

Fine dining in the bizarre world of Lewis Carroll.

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

A church of bones, decorated with 40,000 human skeletons.

A hands-off space for graffiti artists to hone and display their skills.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

A walk through the historic city center, under the streets of Seattle.

Historic psychiatric asylum and most-filmed location in the Great White North.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

One of the oldest medical collections in Europe focusing on rare surgical instruments.