On the site of a former Army ammunition plant, bison now roam a restored sea of grass.

This national park dedicated to the tallgrass prairie ecosystem still displays its military past.

Museum covers every step of the chocolate-making process, from cultivation to the finished product.

A Manhattan office building is home to the world’s largest chess board.

Tucked away amidst some of the most famous addresses in the world is New York’s only fraction of a street.

The strange phenomenon causing gravity to "work backwards" on this hill has been blamed on the paranormal.

The only Frank Lloyd Wright-designed structure in the architect's hometown.

A small cemetery chapel designed by Frank Lloyd Wright and built in 1906.

A wonderland of caves in eastern Iowa.

This stone polylith serves as both a 100+ year old experiment and monument to the history of science.

Remember and reflect at this 9/11 memorial site.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.

A park where you can watch the highway zoom past.

A miniature world of concrete and stone in Springfield, Ohio.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

This sculpture is a cross between an observatory and an earth mound to honor the community's rich history.

A single handprint, which, according to Ohio State University legend, cannot be scrubbed off.

This grand Spanish-Cuban restaurant has been serving customers for more than a century.

A building so large that it has its own weather.

This small museum concentrates on the juicy history of orange production in Florida.

This railroad and oil tycoon's lavish estate now stands as a time capsule of the Gilded Age.

This spooky road cut through a mound of ancient coral might be haunted by a witch.

These craggy limestone outcrops offer a glimpse at a unique piece of Florida geology.

In a time before lifeguards, this house was a sanctuary for the shipwrecked.