This Soviet-era athletic and recreation facility is the highest ice skating rink in the world.

Armenia's premier center of astrophysical research was established during the Soviet era.

A desert island with both a buried treasure and a famous castaway.

These stairs were built to accommodate royals mounted on elephants.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.

Ruins of an early Roman Christian church dating back to the 4th to 5th centuries.

This oddly named town refuses to change its phallic moniker.

The bullet-banged DIY suit of armour belonging to Australia’s most famous outlaw.

A curious art park at the geographic center of Europe is home to 3,000 television sets and other wonders.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

A spitting ode to a German serial killer.

This ultra-modern wooden boardwalk turns the ocean into a swimming pool.

A winding, blood-red tunnel of hardened lava navigable by foot.

High in the clouds of San Marino sits an ancient tower with some curious prisoner graffiti.

A narrow strip of land is home to the tallest migrating dunes in Europe.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

A Zoroastrian funerary tower where excarnation rituals are carried out is threatened by the area's dwindling vulture population.

A relic from one of London's worst 19th-century slums.

The ruins of a rehabilitation center for World War II vets can be found in the Westminster Ponds Conservation area.

What almost started out as a spite house became an eccentric's found object masterpiece.

These crumbling Latvian forts make for some haunting seaside ruins.

This small Arkansas town once had a close encounter with the Beatles, and are determined never to let anyone forget that. Ever.

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