For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

This monumental work of art symbolizes the coming together of a previously divided city.

The original burial place of this preeminent 18th-century Jewish philosopher was razed by the Nazis.

Several of these strange cone-shaped bunkers can still be seen around the former Nazi headquarters.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

Ancient cave tombs known as the "houses of fairies."

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

This once-derelict building is now one of the most beautiful bookstores in the world.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Quito's historic, main square dates back to the 16th century.

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

A pair of connected skyscrapers form this symbolic gateway.

Leave it to Key West to drop a real-live drag queen instead of a ball to mark the arrival of the New Year.

Every equinox this Maya pyramid puts on a spooky ancient light show.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

A reminder to choose water over wine since 1888.

A decommissioned military complex that's now a modern industrial park.

A notorious punk house turned co-op.