The largest stone circle in the world has ended up bringing up more questions than it has answered.

Famously misunderstood wonder of the ancient world

A floating cat sanctuary on an Amsterdam canal.

Museum preserving torture methods from the past.

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

The secret city built by the Manhattan Project.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

A museum dedicated to the history and exploration of both popular music and science fiction.

This impressive Boston holy house is the American mecca for Christian scientists.

Statue commemorating the use of ether in anesthesia.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

Radical Bookstore and Community Space.

Two thousand artifacts from around the world collected by one woman who loved to travel.

One Confederate statue that accurately reflects the ugliness of its subject.

This replica of the Greek structure is in the heart of Nashville.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

This award-winning men's bathroom was just too beautiful to not allow women to see.

This structure among the trees was the result of divine inspiration.