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

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

A 131-year-old wunderkammer of Texas history.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

The official Presidential Residence of Los Pinos became an emblem of Mexico's opulence and presidential corruption.

The unique collection often goes unnoticed by visitors focused only on the archaeological objects.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

A museum in the former home of Marxist revolutionary Leon Trotsky.

The only castle in North America to ever house European sovereigns.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

66,000 pieces of art, donated by one of the world's richest men.

Part bookstore, part café, and part forest.

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

An island filled with hundreds of hanging, decomposing, decapitated dolls.

The ritual has been performed uninterrupted for nearly 700 years.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

There's an exclusive Beefeaters pub hidden in the Tower of London.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Daily jousts and dancing barrel makers in Munich's mechanical clock.