While the U.S. and Soviet Union were engaged in a space race, Poland built a UFO on the ground.

A peculiarly shaped brass sculpture hidden in a courtyard in central Lviv

World's largest crossword puzzle spans the side of a towerblock, its clues scattered throughout the city.

The 700-year-old fortress was the site of Count Orlok's castle in "Nosferatu."

Monumental sculptures guard many of the graves, transforming this necropolis into an open-air fine art museum.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

This chimerical bridge/tunnel appears to dead end right into the sea.

Swedish skyscraper with a 90° twist.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Hans Christian Andersen for the postmodern world.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The remains of Crystal Palace Great Exhibition of 1851.

Abstract dinosaur models in London.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

Murals of the wild parties once held on the frozen River Thames.

This one has sailed five times as far as Sir Francis Drake's famous ship.

A naturally mummified 2,000-year-old man.

The broken skateboards that became a poignant memorial to a murdered skater.

A reminder to choose water over wine since 1888.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

Elevated freight railway turned wildly successful urban park.