A public, open-air art exhibit featuring world-renowned sculptures hides in plain sight on the outskirts of Orlando.

A mountain pass in Bulgaria's Balkan Mountains was the site of four historic battles.

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

A crumbling monument to a now locally-extinct sport in Bulgaria's oldest ski resort.

This historic black and white monastery is one of Bulgaria's architectural jewels.

A vast Communist-era exhibition space in the Bulgarian capital.

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

Sofia's legislative center is continuously reinventing itself.

This building has two facades of clashing architectural designs.

A striking symbol of the Bulgarian capital.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

"Unity, Creativity, Beauty."

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

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.

There must be a pun in this haystack somewhere...

Commemorating the spot where the famous scientist fed his pigeons.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Electrical pylon in the shape of Disney's beloved mouse.

A different kind of swan princess.

Get up close to an F-4 Phantom flown in the Vietnam War at this Florida park.

A vast array of tropical plants collected by a vacationing couple.