Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Famously misunderstood wonder of the ancient world

This striking art museum holds an amazing series of curiosity cabinets.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Three hundred years of preserved Spanish colonial history in San Antonio.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

Ever wanted to can Spam?

The embalmed remains of the communist leader lie within a custom crystal coffin.

Museum dedicated to the art of cutting and polishing stones.

To find the "unicorns of the deep" you've got to go downstairs.

This massive roadside mascot was the first version of the giant to illustrate his butt.

A lush green oasis in the middle of Chicago.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

People escaping slavery passed through the oldest house in Lombard, Illinois on their northbound journey to freedom.

This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.

World's second largest particle accelerator, where nature reveals its secrets.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

Every president in history is immortalized in bronze in downtown Rapid City.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.