Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A daily replay of the experiment that proved the rotation of the Earth.

Before Nixon, "watergate" meant canals.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

Commonly acknowledged as the only public monument to the Devil himself.

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

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

Step inside Lucy, the world's largest "elephant."

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

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

World's most expensive home.

Concrete strongholds stand guard over the Golden Gate.

Tiki luxury on Nob Hill.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

The celebrated eyesore created by starry-eyed sweethearts.

Museum preserving torture methods from the past.

The history and future of cannabis.

His "Lionheart" is entombed separately from the rest of his body.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Haunting and beautiful trees, doomed to die.

Mysterious rocks that ring musically when struck.