A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

The final resting place of New Orleans' most famous voodoo priestess.

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

This Chinese-style quartz sundial was saved in its final hour.

A collection of over 15,000 zines works to preserve DIY publishing culture.

This museum offers an actual time machine back through Colorado's past.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

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

A replica of the famous memorial statue at the Normandy American Cemetery hides in an office building in downtown D.C.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

A fantastic array of trays and cables once whisked books over to the Capitol at 600 feet per minute.

A secret greenspace hides atop a Capitol parking garage.

A wondrous old library overlooking the nation's capital.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

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

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.