Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

The resting place of a Civil War celebrity's amputated limb.

The wooden airship was the largest flying boat ever built.

Home of Howard Hughes' Spruce Goose.

A 36-ton remnant of the last Ice Age now resides amid picturesque vineyards.

This incongruous small ferry across the Willamette River north of Salem, Oregon has been operating continuously since the 1850s.

This charmingly homemade amusement park has been growing for 40 years.

An institution that preserves the history of institutionalization.

These trees are living witnesses to events that inspired poet Walt Whitman’s service during the American Civil War.

A throwback to 1980's gaming nostalgia.

Constructed by the younger brother of George Washington.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

An overgrown garden stands as a grim marker of an unrealized dream.

The site of one of the deadliest skirmishes during the Battle of Fredricksburg.

The magic's in the hole!

This small museum houses rare airplanes from aviation's golden age.

An emporium for the weird, creepy, rare, and just plain gross.