Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

On the Hudson resides one of the largest clocks in the world.

Five mythical trolls have taken up residence in woods and hidden on paths at the Coastal Maine Botanical Gardens.

Final resting place of a New Haven urban legend.

Connecticut grave of the woman responsible for the Winchester Mystery House in California.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

One of only two remaining Victorian-era greenhouses in New York.

A hidden architectural treasure in New York's Brooklyn.

This interactive gallery makes you feel like you've stepped into a fantasy world filled with whimsical monsters.

This elaborate tunnel is the first structure composed of cast concrete in the United States.

A tree that grows parallel to the ground was declared Brooklyn's "crowning curio" by the poet who saved it.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

The site of a fallen tree that protected Americans from British forces during the American Revolution.

This secluded ruin was once a home for exotic plants.

This striking arch, one of the first architectural elements constructed in Prospect Park, was recently restored to its original glory.

Built for television, this statue now serves as an unlikely memorial to a fireman who died on 9/11.

This waterfront museum in Maine is dedicated to the history of the smoked-herring trade.

This candy-striped tower is the farthest east you can go in the United States.

An early-19th-century hotel with a past that is steeped in the Civil War.

An out-of-the-way wildlife haven with a rich and storied past of harboring thousands of fugitive slaves, or "Maroons" during the mid 1800s.

The land is home to swimming ponies and a legendary 18th-century treasure.

The factory for the popular Dumbo location, the Greenpoint shop is a quiet gem.

A cargo of beautiful music.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.