Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

Located in the house where Gustave Flaubert was born, this odd museum has more to do with medical grotesquery than the Western novel.

Lego blocks now patch Rouen's WWII scars.

His "Lionheart" is entombed separately from the rest of his body.

An ancient ossuary in Rouen.

An exquisite Baroque church in Vienna's old town.

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

What happens when you cross a mayor and a painter?

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

This enormous abstract sculpture is part jungle gym, part elaborate noise-making machine.

A Victorian-era British railway viaduct has been transformed into an elevated garden.

A quiet country churchyard holds a monument to the last known sin-eater in England.

This 19th-century pub features stained-glass windows celebrating Victorian-era “champions.”

Giant, friendly pelicans in Central London, the most unlikely of places.

A domino effect created with Britain’s iconic telephone boxes.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

One of the world's largest collections of pathological specimens.

This hidden green space is the city's second largest conservatory.

The curios of pharmacist and collector Henry Wellcome.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

Hidden beneath the streets of London is a secret subway that only carried mail.

A tongue-in-cheek arcade where the games are based on everyday life.