This historic, palatial theater is now one of the world’s most beautiful bookstores.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

One of Jeff Koons’s largest sculptures and his first commemorative work.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

A bronze bust commemorates the heroism of the secret agents who led covert operations against the Nazis.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

Its collection includes a broad array of social, geographic, graphic design, and political history.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This sculpture meant to honor the bravery of the Indigenous Mapuche people of Chile proved controversial.

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

According to myth, there's a bloody explanation for the beautiful bright red color of this rock formation set amidst alpine vegetation.

An artful memorial to 4,000 fateful oranges.

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

The metal leaves on this tree are engraved with the names of Holocaust victims.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

Museum dedicated to the terror regimes of Hungary.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

An ancient octagonal weather station named for the eight Greek gods of wind.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.