A historic presidential getaway on the continental United States' southernmost island.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

A monument celebrating the idea of reaching inaccessible places.

A small memorial to a deadly night in Serbia that shook the world before it was swept under the rug.

A misnamed well, with a deep dark past.

A museum dedicated to the former country.

A maze of underground tunnels beneath one of the most beautiful forts in Serbia.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A pair of connected skyscrapers form this symbolic gateway.

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

Flamboyant architecture from the turn of 20th century.

The oldest housing complex in Riga is a mini timeline of architectural trends.

3,000 market stands in five former Zeppelin hangars.

The hairpin turns in this mountain road take the shape of a letter—is it a coincidence or a symbol of love?

A beautiful mountaintop mausoleum devoted to a Montenegrin icon can't seem to make everyone happy.

This World War I fortress is the perfect place to catch a Montenegrin sunset.

A tiny church on a man-made island in the Adriatic.

A curious cave church carved into the face of a cliff.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

Some of the smallest works of art in existence.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

These roaring primates were considered a divine creature in the cosmology of the Maya.