Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

Notorious artist squat renovated into legal studios.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

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.

What looks like a normal building is really a hollow facade hiding a subway vent.

A suburban housing complex with astonishing architectural features, locally nicknamed "the Camemberts."

This stunningly massive housing complex is a go-to filming location for dystopian sci-fi cinema.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

Atop this former dutch railway office sits an interstellar work of art.

An honorary saint of the people, Maria Adelaide became an incorrupt corpse, the clothes intact, exhaling “a strong scent of roses.”

Down this yellow brick road, visitors are treated to toadstool houses and massive mushroom sculptures.

Legends surround this natural rock formation that looks like a Moorish king wearing a crown.

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

A hidden three-foot-wide house separates these two regal churches.

An icon of the city, this chapel features an amazing dome ceiling and offers panoramic views.

Legend has it the lovelorn tears of a princess and a shepherd boy formed the blue and green twin lakes in the Azores archipelago.

One of few vertical lava tubes in the world accessible by foot.

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

These small, triangular, colorful houses are a staple of Madeira Island.

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