This woodland architectural installation acts as a camera obscura for the heavens.

This shop for all your super spy needs hides an educational secret.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

The North Carolina grounds are leased in perpetuity to the British Commonwealth for as long as the WWII sailors are buried there.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

The taxidermied remains of a once-great parrot.

This charming English house was once the home of England's most famous poet.

Famously misunderstood wonder of the ancient world

The oldest working mechanical clock in the world.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

65 million-year-old chalk outcroppings mark the end of the Jurassic Coast.

Hidden in plain sight, this creepy sculpture watches from above.

Used as an example in one of the first dictionary entries for "museum" in 1706.

A 26-foot shark sculpture—a statement about bombs—set off a municipal battle royale.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

This 11th century tower is said to be the oldest building in Oxford.

Oxford University's stateliest library seems designed to make students truly feel the weight of knowledge.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.