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

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

The most visited, and possibly most controversial, museum in Germany.

Cold war icon and onetime "hole" in the iron curtain.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

The stoutest tree in the world.

These warring psychedelic crags commemorate an unsuccessful military operation.

What happens when you cross a mayor and a painter?

An ancient knight and a symbol of the city's freedom.

Before Nixon, "watergate" meant canals.

"A hideous albatross in the Hudson River Valley."

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

The oldest continuously inhabited street in America.

An abandoned asylum once on the cutting edge of lobotomies may be reborn as a Christian college.

Need a hardcopy of the 50-title Code of Federal Regulations? This is the place.

A surreal statue honoring Prague's favorite literary son.

A peaceful international sculpture garden in upstate New York.

A bronze sculpture of Lenin’s likeness outside Havana surrounded by 12 human figures in solidarity with the Bolshevik Revolution.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

Michael Heizer's masterwork in the Nevada Basin.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Time has stopped at the house where Gandhi died.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

A museum founded to reflect on and remember the human rights abuses under Chilean dictator Augusto Pinochet.