Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

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

This is not your typical jungle gym.

A commemoration of over 150 of St. Louis's favorite sons and daughters.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

A little sculpture with a large wardrobe.

Drink among marionettes at this pub inside a historic puppet theater.

Statues of a fire-breather, a clown, and a whole performing troupe celebrate Luxembourg's creative side.

Meet the bronze beloved pet to a family of famous peeing statues.

This collection of French root art looks like an indoor fairy wonderland.

Some believe that the artist behind this whimsical statue inserted his own likeness as a way to discreetly flip the bird.

Enormous, fluffy dogs frolic around this museum dedicated to a legendary Saint Bernard.

A unique bridge with an equally unique view.

The fairy tale castle of the "fairy-tale king."

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

Affectionately known as "Lord Bot," this historic statue has a cult social media following and rightly claims to be “the most metal inhabitant of the Wren Yard.”

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

Dine like an American revolutionary at Colonial Williamsburg.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

The only recreation of William Shakespeare's indoor playhouse.

The highest point in Virginia can only be reached by passing through ponies and flowers.