Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

An astounding collection of medical specimens, including bits of President Lincoln.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

A lawn full of retired spacecraft on display at one of NASA's first research labs.

The Forest Service's surprisingly sophisticated collection of wildfire prevention art features America's most beloved bear.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

This abandoned sea fort has become an accidental bird sanctuary.

An eerie, decaying ghost town destined to fade into the forest.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.