The first presidential bomb shelter was located in an old vault under the Treasury, connected to the White House via tunnel.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

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

A World War II-era submarine is stuck in the mud in New Jersey.

A small part of lower Manhattan is actually made from a bit of England.

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

A decorated war pigeon stands guard in eternal taxidermied rest at his alma mater.

The only remaining piece of hull of the most decorated US ship of WWII is this giant name plate.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A train ride to the middle of nowhere gives its passengers some of the most iconic views of Japan's seasons.

A small, but award-winning beach known for its literally spotless reputation.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

The only museum of sake in the United States is nestled in an unlikely California college town.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

The first American department store, and home to the largest operating musical instrument in the world.

In the early 1800s, surgery was also a show.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.