Science meets wall art to highlight the beauty of famous mathematical equations.

The bridges portrayed on EU currency aren't fictional anymore.

Devious political maneuvering and four ancient, working telescopes are central to the world's second-oldest observatory.

Oslo's historic toboggan run has been letting thrill seekers slide from train stop to train stop for over a century.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

Ghosts of France's colonial past.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

This California eatery has made a name for itself by embracing Asia's rich history of eating bugs.

A 19th-century architectural wonder designed by the "father of the skyscraper."

An Adirondacks museum housed in the former studio of Marcella Sembrich, the 19th century opera star most famous for her role of Mimi in "La Boheme."

The remains of the first saint from Alaska in the Russian Orthodox Church.

A replica of a 7th-century church hides in plain sight in the middle of the concrete jungle.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

Astronomers plan to launch a space telescope into orbit, to find out what exactly stands in the way of an asteroid hitting Earth.

The beloved dining spot stands at the cross-section of Hollywood and the Old West.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

Thousands of unique minerals, including some of the most impressive fluorite crystals in the world.

The house's confection-like decorations are the result of one man's painstaking work over decades.

A Bhutanese temple gifted from the isolated Himalayan kingdom is now a surprising cultural gem located at the University of Texas at El Paso.

This neo-Gothic former auto showroom is one of the few remaining reminders of Brooklyn's "Automobile Row."

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

Long-forgotten artifacts give incredible insight into New York's most glamorous hotel.

This vacant church in the Financial District was once the heart of New York's first Syrian immigrant community.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.