This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

A massive, majestic mammal watches over pedestrians from his perch atop a former B.P.O.E. lodge.

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

Once the largest trading firm of enslaved people in the U.S., this building is now a museum that preserves Alexandria's dark past.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

This pharmacist and his patient greet visitors to the National Community Pharmacists Association.

This cannon dating to 1755 has stood guard at this suburban intersection since 1915.

A small and somewhat hidden memorial to 68 local veterans of the Vietnam War.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

This legendary urban waterfall creates a dazzling display of rainbows.

A museum dedicated to the alleged Roswell Incident.

The final resting place of the living embodiment of the famous Forest Service symbol.

This is one really big nut.

Crumbling hotel echoes with the sounds of the '30s.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

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

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Soaring over the Niagara Whirlpool since 1916.

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.