An abandoned brutalist monument whose history has been lost to the ages.

This picturesque monastery at the base of a cliff is a peaceful oasis open to all visitors.

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

These warring psychedelic crags commemorate an unsuccessful military operation.

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

Bronzes and busts that once stood in the city's main squares are now relegated to a small hidden courtyard.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

These crumbling Latvian forts make for some haunting seaside ruins.

This abandoned secret city is a crumbling wonderland of Soviet ruins.

Guests become prisoners on a visit to Latvian prison.

Putting the "mod" in "modular" since 2000.

Sculptor Antony Gormley used chaos theory and fractal growth to design his tallest creation.

A student driver's nightmare.

These morbid carvings remind churchgoers of the inevitability of death.

A sharp sculpture made of thousands of pieces of jagged glass.

This micro-nation may be some sort of prank, but its constitution sure seems official.

Old cabin-like homes in a rural community untouched by time are known for their vibrant and colorful window shutters.

A marker honors the brief peace found by a tormented artist in the fictional land of Kcymaerxthaere.

Underwater roads undetectable from the surface used for escape routes from foreign invaders.

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

This remote sandstone cliff has one of the richest collections of Livonian petroglyph marks.

This former Nazi labor camp is now a poignant memorial, complete with giant Soviet-style monuments.

Twelve hundred stone carvings guard this off-the-beaten-path Buddhist temple.