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

A treasure trove of astronomical, mathematical, and scientific instruments at Cambridge University.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This museum houses an imposing skeleton army comprised of creatures great and small.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This medieval church tower has maintained its clockworks since the 16th century.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

This intricately carved and hilariously huge bed was such a famous symbol both Shakespeare and Byron used it in their writing.

Explore nearly 400 years of English middle-class home life.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This artist's home turned gallery/museum preserves the creator's love of "Eastern" influences.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

London's smallest police station is barely the size of a phone booth.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Hundreds of hidden passageways weave through the old quarters of Lyon.

Hidden beyond a kitschy giant beetle is this remarkably sprawling collection of preserved insects.

This statue of an obscure comic strip hero stands as a tribute to patriotic service and a cautionary tale about embracing fads.

The remains of this ornate chapel now act as a portal to a cramped French cemetery.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

Explore some of the most unique vehicles in history along with a cast of unsettling mannequins.

This hot dog-shaped diner has moved all around Colorado, but has never been to New York.