A medieval wash house where people washed clothes in a river allegedly formed by the tears of a mourning nymph.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

This Arabesque Italian castle was built with a primitive, if ingenious, air-conditioning system.

Every inch of this chapel is covered in craftsmanship from across the world.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

Switzerland's oldest public observatory is an important part of the Zurich cityscape.

Underneath the well-known Lindenhof hides a secret cellar documenting Zurich's early history.

This massive boulder was hurled into a Zurich church when a gunpowder depot was struck by lightning in 1652.

A statue of Charlemagne, created in the 1400s, once overlooked the city, and is now located in a crypt.

An elliptical glass tower that is known as the world’s first two-sided building.

The former location of a platform that allowed passengers to safely wait for the trolley.

Commemorating the "Little Giant" who ran for the presidency.

An easy-to-miss plaque marks the building that first held this 19th-century telephone innovation.

The oldest place in Hartford is a cemetery with thousands of bodies stacked beneath the grass.

A portrait of the Charter Oak hangs in a frame made from the Charter Oak.

The author of Uncle Tom's Cabin was neighbors with Mark Twain while living in this Connecticut home.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

A stone monument marks the location of the final battle of an armed uprising which had a significant impact on the creation of the US Constitution.

A rich collection honors the iconic American artist, down to the jacket worn in his “Freedom of Speech” painting.

Stay at this storybook estate, featuring Sir Henry Hudson Kitson's masterpiece "Gingerbread House."

A hidden oasis just north of Chicago's Chinatown.

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.