Though they might seem like arbitrary scratches in the wall, these were once official measures of length.

Above the door of a house, a plaque claims to commemorate the future living place of the inventor of time travel.

This residence straddles a border between Belgium and the Netherlands.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

Take a leisurely walk through the park to find the seven giant troll sculptures hidden throughout the park.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

Somewhere there is a giant who can no longer poop, but now travelers can stay inside his anus.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

The largest flower auction house in the world.

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

A market built atop boats is one of the few floating holiday markets in Europe.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

This subterranean studio is filled with fascinating kinetic art.

This unusual elevator doesn’t stop or slow down.