This small museum in a 17th-century building honors three iconic Scottish writers.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

Mexico City's largest market contains a Willy Wonka-esque wonderland.

Frida Kahlo's childhood home, now a museum of her life and works.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

The National Park Service’s best-kept secret with views that rival any in D.C.

This Masonic lodge was the first major private building to be constructed in Washington, D.C. after the Civil War.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

The middle finger of modernity.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

A Nesting Doll of Churches.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Pompeii's less famous neighbor is still revealing her secrets.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

Genoa's collection of over 4 million zoological, botanical, and geological specimens from around the world.

At the "Garage Mahal" in Houston, car culture is about more than just driving.