One of only two commuter aerial tramways in the United States.

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

The footprint of a frustrated devil in Munich's Cathedral.

A small square plaque marks a failed assassination attempt that could have changed history.

The prototype for all Nazi concentration camps.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

One of the only memorials dedicated to journalists who died in combat.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

It’s not hard to see why the historic Peabody Conservatory of Music’s library has been described as a “cathedral of books.”

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

The only museum with its curator—and her pets—buried inside.

100 year tradition of fist fights, marked by marble footsteps.

Home of the Large Hadron Collider and the birthplace of the World Wide Web.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

A fortified city, home to a remaining population of five families

One of the most spectacular canyons in the world.

God's Saharan sandbox of wrath.

A mythical garden that once grew the golden apples of wisdom is said to have existed in this ancient Moroccan city.

Single runway interrupted by a busy road that cuts across its middle.

Held in a fort that once stood for colonization of the area, this museum now tells the history of its indigenous people.