This memorial marks the devastating day that Texas City was destroyed in a daisy chain of exploding ships.

A health museum containing a 27’’½-foot intestine.

There is an unmarked red button hidden over Houston's Buffalo Bayou that is just begging to pushed...

A decaying concrete oil tanker served as a disposal location for bootleg hootch.

Curios, scientific antiques, oddities for sale.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

Historic Hull Street was actually the first street with a proper name in the Boston area.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

An exotic wildlife habitat right off The Strip.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

A massive underwater sinkhole made famous by Jacques Cousteau.

What remains of the summer palace of King Kamehameha III.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

This campus chapel is Robert E. Lee's final resting place and a topic of debate about the legacy of the Civil War.

The Kirkland Monument remembers a selfless Civil War hero who braved the battlefield to give water to his dying enemies.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

The hide of Stonewall Jackson's equine sidekick is on display not far from where the ashes of his bones are buried.

Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.