Vibrant street art created with mixed media.

The odd cement nubs littering this Spanish square are actually the entrances to a series of buried silos.

With a facade that measures just 107 centimeters, this five-story building is one of the skinniest in Europe.

This house's itty bitty size means no humans allowed.

This sculpture in Valencia features 22,000 tiny, obsidian blue figures that pay homage to the Lady of Elche.

This architectural oddity is an oasis of green on the outskirts of Valencia.

This abandoned viewing platform has become a monument to unnecessary government spending.

A curious fountain that resembles a beloved character from the 1960s.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

England's “third-oldest college” has not graduated a single student in over 400 years.

A forgotten underground railway once whooshed trams beneath London.

This ancient spring in central London was featured in a Peter Pan story.

The only statue of a royal mistress in all of London.

A perilous medieval road leading right into the sea.

Constructed during the 7th century this is one of the oldest largely intact Christian churches in England.

This statue commemorates one of medieval England’s most courageous heroes.

This curiously modern carving of St. Peter wears wellies.

The collection contains over 25,000 items and details the painful dental practices of the past.

A monument to early air travel and an unhappy cat.

This statue in Holland Park might be one of London’s oldest outdoor statues, but its exact origins are unknown.

A statue for a zoo that was never built.

This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.