The U.S. Navy’s preposterously detailed mini battleship took 77,000 hours to complete.

An overlooked memorial honoring the local Washington residents who died in World War I.

The first memorial dedicated solely to the Black troops who fought for the Union.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

Look closely and you’ll notice that the color changes a third of the way up the tower.

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 nostalgic bibliographic gem.

Home to items never before seen by the public.

An old soap company building now houses one of Minneapolis’s oldest independent non-profit art galleries.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

This restored colonial house was once home to the botanist responsible for bringing avocados to the U.S.

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

This is not your typical jungle gym.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

Less a museum than a bizarre fantasy world created by artists and engineers.

An accidentally hidden library containing the ephemeral history of New York.

Nope, not Washington Irving's house.

A well-worn marker in a forgotten alleyway is all that remains of what had been one of Manhattan's most beautiful buildings.

You must take the A train... to the last active cemetery in Manhattan.