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

The world's largest rotating world.

The eccentric mansion of one of the most popular horror authors of modern times.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

The highest peak in the state of Vermont has some interesting features.

This supermarket is suspended 25 feet above an interstate highway.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

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

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

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.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Ironically this massive termite is the mascot for a company that is acclaimed for killing his kind.

As state highpoints go, this spot is one of the lowest, but for years it was also the hardest to climb.

This lighthouse was witness to the end of WWII hostilities and now collects creepy cairns.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

This elaborate towering structure was once famed for its revolutionary height.

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

A toxic ghost town sitting atop a massive coal fire.

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

FDR's Art Deco hospital tower was hopelessly inefficient.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.