César Baldaccini's iconic sculpture of a 40-foot thumb stands tall in La Défense.

The celebrated eyesore created by starry-eyed sweethearts.

Indents in the pavement are all that remain from a grisly death machine in Paris.

An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.

The storefront of a ramshackle Parisian puppet theater.

A French artist's vague warning hangs over Belleville.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

BDSM, 1930s Style.

The former global standard for the exact mass of one kilogram sits under lock and key outside Paris.

The mummified heart of Louis XVII, the lost dauphin of the French Revolution.

How did a French journalist’s grave become the sexiest statue in the cemetery?

The video game-themed street art first popped up in the French city.

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

Dedicated to the art of hunting, with juxtapositions of contemporary art.

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

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

Noirish green neon marks the location of one of the oldest private detective agencies in France.

This small, ingenious cannon once helped regulate Parisian life.

Claude Monet was baptized in this lavishly ornate Paris church.

Paris' linguistic guide to the international language of, yes, love.

An unusual round church in London with a Templar past.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

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

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