The elevator hidden in a smokestack on Roosevelt's yacht now serves as a monument to the former president.

A drab two-story office space in Delaware is a hidden tax haven for Hillary Clinton, Donald Trump, and over half the Fortune 500 companies.

Once used as a deterrent to drinking alcohol.

In 1787, a group of delegates met at this very spot to drink, be merry, and ratify the Constitution of the United States.

The longest structure of its kind ever built in Michigan.

A memorial to the Potawatomi chief who allegedly ran nearly 150 miles to alert settlers of an impending attack.

A grandiose title could not save this mercantile community from obscurity.

In the parking lot of a fast food restaurant, a statue memorializing a prolific bull elephant.

This giant, rotating globe was built to celebrate the expansion of a company that makes steam cleaners and pressure washers.

A pyramid commemorates the birthplace of James Buchanan, the 15th president of the United States

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

This Art Deco service station has been providing tune-ups and turning heads for close to a century.

Overshadowed by quilts, the artistry of these patterned textiles went underappreciated for too long.

These unassuming lighthouses have seen the first reading of the Pledge of Allegiance, the first wireless transmission, and more than one mystery.

This historic lighthouse was well known for the large number of women who served as its keeper.

A rural colonial settlement that contains the remains of a store and cooper.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

The longest-covered bridge in the state of Maryland.

Like Stonehenge, but with boats and oodles more charm.

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

Once America's tallest structure, now a Baltimore landmark.

It’s not hard to see why the historic Peabody Conservatory of Music’s library has been described as a “cathedral of books.”