After nearly 60 years, there's still a bear at Paddington Station looking for help.

An unusual round church in London with a Templar past.

Catacombs turned marketplace.

Rebuilt remains of a temple to Roman god Mithras.

This 1920s Dutch barge is now a floating bookstore.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

The Sun King's military models, saved from the Louvre.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

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

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

This demon atop the Notre-Dame de Paris looks utterly bored.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A surrealist timepiece by the artist of melting clocks.

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

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