This Russian bar-restaurant lies within a three-story underground bathhouse.

At night, this glittering musical tunnel draws skaters and photographers.

Space program, pneumatics and more, bits and pieces, for movie sets or the common man.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

Old car parts and assorted materials get turned into one man's mechanical treasures on the side streets of Cleveland.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

A tiny, intricate model railway system.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

This small memorial is almost as well concealed as Smalls himself was on the night he sailed to freedom.

A stack of stones steeped in Irish folklore, much like the hero they're connected to, hide in plain sight.

Dedicated to the history of the health sciences.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

Bits of flat terrain surrounded by cliffs make one of the most beautiful landscapes in the Azores.

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

This crumbling Portuguese ruin overlooks the populace it once ruled.

Ancient catacombs form the foundation for this Rococo orgy of a church.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

This giant mural of Santa Muerte in downtown São Paulo reminds passersby of their own mortality.

An enormous roadside pan tells the story of a battle for pie glory.

A subterranean world of tunnels links several buildings of this rare 19th-century asylum.

The birthplace of the Ford Model T is now a museum full of antique cars.

The origin of the Nixon tapes is rooted in technological incompetence as much as secrecy.

Taxidermy and miniatures come together to create this unique museum.