This Pennsylvania structure, the oldest building in Gettysburg, was once a stop on the Underground Railroad.

Experience the pivotal Civil War battle at this interactive museum.

This covered bridge was used by both Union and Confederate troops during the Battle of Gettysburg in 1863.

This is the spot where the bloodiest battle in the American Civil War may have started.

Remember and reflect at this 9/11 memorial site.

The cold-blast iron furnace generated 1,000 tons of iron per year at its peak.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

A tunnel that brings more than a century of history to life from the deepest parts of the Niagara Gorge.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This seemingly cursed monument is dedicated to one of Canada's great war heroes.

The first outlet of Canada's biggest fast-food franchise has been slinging doughnuts since 1964.

Over 60 chemical plants and oil refineries sit in a 15-mile-wide section outside town.

These five houses were built for the 1933 Chicago World’s Fair.

The remains of a religious colony, its amusement park, zoo, and baseball empire.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

This early 20th-century former train station’s unusual roof shape earned it a rather witchy name.

This quaint stretch of road is the final resting place for hundreds of America's four-legged veterans.

This state-of-the-art planetarium takes architectural inspiration from the sun itself.

As its grandiose name implies, this wooden dome is unsurpassed in size.

A comedy troupe's collection of bizarre humor.

Watch the ships come in on Michigan's 210 ft. high observation deck in Sault Ste. Marie.