The first spinning jail built in the United States is the only one that still turns.

The tombstone of an unfortunate explorer who disappeared in the Paris Catacombs.

The world-record holder for the longest bridge stretching continuously over water.

A 115-year-old restored German dining hall awaits those who venture beneath the Minnesota State Capitol.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

This abandoned viewing platform has become a monument to unnecessary government spending.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

Eulogizing an unknown man's unusual demise.

This relic of 19th-century infrastructure is one of the few remaining coal gas storage tanks in the U.S.

The body of an unidentified woman, visible through a glass coffin, was discovered by accident.

This ancient oak tree plays matchmaker for singles willing to branch out from the usual dating scene.

A temple made famous by Japanese Buddhist monks who sacrificed themselves at sea.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

The Swedish flag over this small naval fort signals that the nation is at peace.

These ornate manhole covers were used for a now-forgotten purpose.

The remnants of an early American attempt at missile defense.

Neglected resting place of some of the city's early luminaries—and a woman encased in concrete.

This Cold War missile launch site has been abandoned for 40 years.

For six months of the year, three giant mirrors direct a pool of sunshine onto this otherwise occluded town.

The abandoned fishing village was swept right into the sea.

Seven people are buried in the middle of what's now a movie theater parking lot.

This overlooked street light once served as a KGB dead letter box.

America's first nuclear-powered merchant ship is now a time warp to the atomic age.

Hundreds of numbered stakes hidden in the woods mark the graves of the lost souls of a nearby asylum.