The final resting place of soldiers' loyal canine companions.

A six-ton wedding present for the King of the Scots.

The most loyal of little dogs, or a Victorian era publicity stunt?

At 207 feet, one of the world's longest continuous escalators.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

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

The world's longest known cave system.

Breathtaking and huge 430 year old maps of Italy.

World's largest Christmas store.

This bare tree might not have leaves but it is constantly clothed in festive decorations left by mysterious local benefactors.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

This Scottish museum is the only one in the world to focus not on one religion but all of them.

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."