17th century streets hidden under Edinburgh were once a breeding ground for the black death.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

A bit of retro transportation flair preserved in the world's largest department store.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

2300-year-old Roman road connecting the empire.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

A giant Troll lurks under one of Seattle's oldest bridges.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

In memory of The Blur Building, the temporary exhibition pavilion of vaporous nothingness.

A geothermal energy project gone wrong is fracturing the city's picturesque architecture.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

Hamburgers are intensely proud of their tunnel beneath the river.

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

The celebrated eyesore created by starry-eyed sweethearts.

This bridge was constructed from the rubble of the infamous Bastille.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.