The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

This abandoned, turn-of-the-century astronomy hub is now the subject of more photographs than it ever took.

This hidden art nouveau gem was designed by an architect in search of a national style.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Museum dedicated to the terror regimes of Hungary.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

One of the most poignant ruins of the Chornobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

Christ's blood allegedly preserved in a Belgian town.

A beer pipeline runs beneath Bruges.

This peculiar border irregularity is the only way to legally enter Russia without a visa.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

Abstract dinosaur models in London.

A stone plaque and a winking pub name are all that remain to remember the victims of deadly 1836 avalanche.

The elegant structure of this 19th century railroad bridge creates an illusion of infinity.

The final resting place of the great navigator, or maybe his brother.

Single runway interrupted by a busy road that cuts across its middle.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

The world's most elegant power lines.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.