Climb inside an iron crystal magnified 165 billion times its normal size.

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

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

Lavish royal estate punctuated with heated greenhouses.

This legendary giant, born from vegetables, terrorized townspeople and cheated local children in games.

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

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

A breathtakingly steep set of stairs is carved directly into the face of the sea cliffs of Bonifacio.

This bridge was constructed from the rubble of the infamous Bastille.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

This sprawling Belgian fort was once thought of as impenetrable but now it is simply an abandoned relic.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

Nicolas Schöffer's massive interactive sculpture was assembled in 1961 and brought back online in 2016.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

The legendary giant's severed hand sits on Antwerp's popular shopping street.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

This ancient Roman aqueduct once funneled water to Diocletian's palace.

A wonderfully strange collection of 500+ stuffed frogs doing people things.