This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

Artifacts fill the old headquarters of the hugely influential political movement to ban alcohol in the United States.

The only depiction of Abraham Lincoln holding a weapon, and the names of all 9,000 Cuyahoga veterans of the Civil War.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

This steamer is known as "The ship that built Cleveland."

Thomas Edison's home and final resting place also boasts an impressive garage, where some of the earliest electric cars are on display.

Take a step into the workshop where Edison and his employees revolutionized the world.

One of the last-standing and most prominent structures from a long-lost colonial port community.

Home of the golf club used by Alan Shepard on the moon, and more artifacts from the sport's history.

Rising out of a clearing in New Jersey's Pine Barrens is an Aztec-inspired monument to the "Lindbergh of Mexico."

Memorial built in 1922 in remembrance of WWI casualties.

The first partially complete dinosaur skeleton was discovered here, forever changing the world's view of the ruling reptiles.

One of New Jersey's oldest surviving buildings still bears the mark of our former British overlords.

Destructive children, start your engines.

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

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

The world's first aircraft factory has been hiding inside an automobile plant for almost 80 years.

An abandoned munitions factory with a shot tower continues to wage war on the surrounding environment.

All that remains of a gigantic earth-moving machine.

The 25th President's marble casket can be visited in this classical Ohio tomb.

Rows of 19th-century brick ovens used to process coal into coke form the center of a wooded park.

One of the last few period-correct, hand-operated canal locks in the country.

One of the largest collections of holy relics in the country.

Featuring one of the most complete and original collections of Presidential memorabilia, this is the site of the last front porch presidential campaigns.