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

The 953 windows undoubtedly make this the world's most beautiful screened porch.

Sacred Indian temple that’s all monkey business.

The world's second-largest sundial, made entirely out of stone.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

A former major munitions plant that has been converted into a sprawling art space.

Home to items never before seen by the public.

The "lovely red Vega" of the legendary record-settling pilot.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Golden Gate Park's historic collection of plants.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A fitting attraction for the corn capital of the world.

Why have you never heard of the second most popular tourist site in New York?

A monument to the military service of America's greatest traitor refuses to even name him.

This collection started by a Cornell professor once held more than 600 human brain specimens, including the one that belonged to its founder.

Pluto is still considered a planet in Ithaca, New York.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

Mysterious 500-year-old tapestries depict a unicorn hunt.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.