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

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

Looming communist pillar with a Czech twist.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

An ode to a soldier who came to town, fell in love, then began making his own sparkling wine.

A sculpture of a beloved local figure, who tipped his top hat to everyone he passed on the streets of Bratislava.

Lyon's "Wall of the Silk Weavers" is one of the largest murals in Europe.

Lyon's miniature version of the Eiffel Tower was built as a statement in support of French secularism.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

Macabre astrological automaton clock dating to the late 1400s.

A Jenga-style cylindrical tower of books that appears to go on forever.

A mocking tribute to the past and modern leadership of Prague.

Countless grotesque faces stare out from this eerie Prague art wall.

A series of playful yellow penguins share a serious message about the environment.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

A massive sculpture of an obscure Celtic coin that has become a symbol in Slovakia.

The largest fountain in Bratislava.

In an area known in Bratislava’s postal history, this sculpture sits equipped with a functional postbox.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.