Originally built in 1869, this castle is currently part of Felician University's campus.

Historic seaside park featuring explorable, abandoned military structures.

A pig barn converted into one of the most eclectic residences in Nantucket.

The origin of these small islands' sweet names is a local mystery.

100 massive sculptures in the Hudson River Valley.

Museum dedicated to awful artwork.

A working metal shop and venue for outrageous art and music shows in a former cannonball factory.

The first ever diner included on the National Register of Historic Places is famous for its custard French toast.

The idyllic colonial home of the artist behind the famous portraits of George Washington and Thomas Jefferson.

From horses to stainless-steel trucks, this iconic Providence burger wagon is one of the oldest mobile diners in the country.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

A gorgeous gilded tower houses what may be the world's largest collection of gin.

Would you like a sleeper hold with that?

This hulking behemoth is actually five interconnected towers built in the 1960s.

Where Greenpoint's first European settler—and troublemaker—made his home.

This 19th century brick building in Brooklyn stands out like the anachronistic landmark that it is.

This beach-side arcade is believed to be the oldest penny arcade in America.

No one is quite sure of the origins of these idyllic natural hot springs at an abandoned mountain resort.

America's oldest archaeological site or a muddled case of wishful thinking.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

A miniature village lies nearly forgotten in the forest by the side of a major highway.

This petite park lets visitors see and touch examples of fossilized dinosaur tracks.

A jewel of early electric boosterism once again charms Connecticut's historic "Hat City."

Thousands of American timepieces on display in the former clock-making capital of the country.