A concrete mushroom that divided Stockholm residents for nearly a century.

This one has sailed five times as far as Sir Francis Drake's famous ship.

An incarceration museum on the spot of possibly the oldest prison in England.

Murals of the wild parties once held on the frozen River Thames.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

The London statue that imitates passersby.

This South London cemetery holds the remains of more than 15,000 people.

Tourists who rely on a transit map to find the iconic Beatles location often end up in a far-off neighborhood.

This sculpture, residing in a quiet corner of a London park, honors the victims of 9/11.

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

A wonderfully eclectic Victorian aquarium lies in the basement of the Horniman Museum.

A unique sculpture calls the outside of this steakhouse home.

A medieval setting reimagined into a unique art alley.

A whimsical art tower at a Bavarian brewery includes a grotto for its mythical beer-brewing dwarves.

This 8th-century Bavarian monastery is home to an exquisite Baroque-era library.

Nestled within a German forest is an intriguing, growing rock.

In a small churchyard in Dingolfing, Germany the quaint Schusterkapelle is there to remind you of your imminent mortality.

Shimmering sea-colored mosaics and Jesus statues cover this opulent building.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

On high feast days, the entire blue-glass front of this modern church opens up to reveal the small wooden church inside.

The taxidermy remains of the first brown bear to enter Germany in 170 years.

King Ludwig I's collection of beautiful women.

These blingy, baubled skeletons lie in glass boxes inside a baroque Bavarian church.