Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A Jenga-style cylindrical tower of books that appears to go on forever.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Monument to a suicide protesting the Soviet invasion.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Looming communist pillar with a Czech twist.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

This automated sculpture of two men peeing will spell out text messages with their micturition.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Countless grotesque faces stare out from this eerie Prague art wall.

This former quarry is now a picturesque gorge that hides a sunken lake.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

Macabre astrological automaton clock dating to the late 1400s.

The first public building in Savannah to offer air conditioning was a luxurious cinema that still operates today.

An early-19th-century hotel with a past that is steeped in the Civil War.

This kitschy tavern is also home to rare early editions of "Treasure Island."

The "last unrestored grand mansion of Savannah" is now a cramped, mouldering maze of antiques.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

A statue honoring 44 continuous years of greeting passing ships.

Local myth claims this is a Sears catalogue home with its windows installed upside-down.