On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

A winding district gerrymandered into the shape of a mantis.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Bizarre Cavern.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

Art deco landmark on the outskirts of Washington, D.C.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

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

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

The most decorated dog of World War I is preserved in the Smithsonian.

It’s not hard to see why the historic Peabody Conservatory of Music’s library has been described as a “cathedral of books.”

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

The site where Poe “in great distress, and ... in need of immediate assistance” likely died.

Once America's tallest structure, now a Baltimore landmark.

An astounding collection of medical specimens, including bits of President Lincoln.

Remnants of a storybook amusement park hidden behind a strip mall.

A historic arena where the Beatles played their first concert in the U.S.

A benevolent, 16-foot-tall river dragon lives on a suburban lawn.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.