The home of Mahatma Gandhi during part of the 21 years he spent living in South Africa is now a guest house.

Did he come up with a theory of cosmic-ray showers while sitting in this bath?

Once a meeting point for great thinkers, and the midpoint of the country.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

This plaque marks the former home of one of the first women physicians in the Netherlands.

The last of Amsterdam's original sea level markers remaining in place.

The attic of a four-century-old canal house hides a clandestine church.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

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

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

This museum was invented in a novel before being made real by the author.

A detailed model of Mexico City is the star attraction within this interactive exhibit inside an old theater.

Outside a market, beautiful murals pay tribute to fruit sellers and farmers, as well as a few legendary artists.

A fabulously bizarre surrealist sculpture by the late artist Leonora Carrington.

Its most enigmatic sculpture is a giantess with a ghostly face on her knee.

The collection of intricate sculptures includes one carved from a mammoth's tusk

Murals made with millions of colorful stones adorn the abandoned building.

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

Get a close look at the gigantic remains of long-extinct mammoths.

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

Explore the history of Mexico's lesser-known ancient alcoholic beverage.