Over 120,000 curious objects that have shaped our modern world.

This 16-foot, intricately detailed model of the Gearing-class destroyer has been called the most detailed model ship ever built.

The U.S. government built the million-pound stack of steel during the Space Race.

A relic of FDR's brief foray into utopian urban planning.

Meet some of the most prominent figures in Black history through life-sized wax models.

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

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

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

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.