Historic seaside park featuring explorable, abandoned military structures.

The filming location of a shark attack in Steven Spielberg's famous shark movie.

An abandoned mine where dreams of quicksilver trickled away over 75 years ago.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The highest point in Texas is capped by a big silver pyramid.

In the mid-19th century, an eight-sided house was the latest fad.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

To avoid the demolition costs this abandoned drawbridge was simply left in the up position.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

This small-town pizzeria won the Hollywood lottery.

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

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.

A giant light 13 feet high shines near Thomas Edison's old Menlo Park lab.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.

Edison's cast-in-place concrete houses were a failure, but way ahead of their time.

Curtiss is a forgotten figure in the early history of flight.

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

This lakeside tower is the third attempt at getting a tourist destination to stick on the spot.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

The first bridge observation tower in the U.S. offers one of the best views of Maine.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.