One man's eclectic collection of treasures found at sea.

According to legend, this rock represents a young girl trapped by an evil ocean spirit.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

Wooden pathways run through this rocky landscape, which legend says was created when a dwarven king pulled down his own castle to stop raiding giants.

The viewpoint for this attractive, off-the-beaten-path waterfall is reached by a paved, wheelchair-accessible trail.

This sign designates the road that leads to the infamous Area 51.

The remains of a failed attempt to regulate Mitchell River.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

This unusual lava tube spouts seawater during high surf.

This blowhole is supposedly caused by a trapped monster.

Submerged lava formations create incredible waterworks.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

Dedicated to an "Unknown Man," this grave holds either the remains of a lovelorn suicide or a Cold War spy.

This island castle contains enough secret passageways to support a season of Scooby-Doo episodes.

The schoolhouse where Jesse Merwin, the inspiration for the "The Legend of Sleepy Hollow" character, once taught.

The life of one of FDR's possible mistresses is preserved in her palatial Hudson Valley mansion.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

A castle built for love, and abandoned due to heartbreak.

The site of a tragic massacre that spawned a multimedia franchise.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

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

Collapsing castle on the Hudson river was once the storage site of military surplus business.