A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

An enormous cat made of recycled wood scraps.

The oldest continuously inhabited street in America.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

An abandoned dollhouse factory.

A once grand hotel is being retaken by the wilderness it once capitalized on.

A terrific purveyor of natural history objects and curios.

New York's oldest concrete structure is being preserved thanks to the gentrification of Whole Foods.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

Homemade rockets, dinosaurs, and robots make this New York small business much more than a furniture store.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

The Hudson River School comes alive at this palatial estate.