Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

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

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

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

This emotive sculpture was originally created for the 1878 World's Fair.

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

The celebrated eyesore created by starry-eyed sweethearts.

This small, ingenious cannon once helped regulate Parisian life.

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.

A chapel on a volcanic core, marking the end of a successful journey.

Final resting place of one of the classic authors of horror literature.

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

Books bound in human skin and H. P. Lovecraft's letters are among a few of the treasures this library has to offer.

This blue behemoth of a bear is a colorful homage to Brown University's mascot.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

Elevated freight railway turned wildly successful urban park.

This whimsical fountain pays tribute to Toronto's four-legged friends.

Known as "Toronto's Flatiron."

The remains of the oldest bone-headed dinosaur in North America.

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.