For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

The smallest pub in Britain was once a cabinet of curiosities and it still has the dead cat to prove it.

The bell that once tolled atop a lost Edinburgh gate now hangs for all to see.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This relic of 19th-century infrastructure is one of the few remaining coal gas storage tanks in the U.S.

The extremely grey columns of one of Mexico City's most iconic beltways are slowly gaining a bit of color.

Underneath the historic center of Mexico City, the remains of a temple dedicated to the Aztec god of the wind.

A Mexico City subway station boasts a hidden museum, complete with a working radio booth.

A bullet-scarred monastery chronicles Mexico's turbulent history of foreign invasions.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

An extravagant 18th-century fountain built with bits of broken ceramic.

The striking jade death mask of an ancient Maya king is displayed in a replica tomb in Mexico City.

You can release a young butterfly at this beautiful indoor garden.

A scientific repository of goiters, boils and other ailments throughout Mexican history.