This lovely tree was a thank you gift from the man known as "Public Enemy No.1."

These vibrant row houses are a unique example of Baltimore kitsch.

A winding district gerrymandered into the shape of a mantis.

Engraved in stone here are the signatures of everyone who signed the Declaration of Independence.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

This abandoned sea fort has become an accidental bird sanctuary.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

A museum dedicated to exhibiting remarkable outsider art.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

A charming tour of the umbrella, tin-can, and drinking-straw capital of the world.

An eerie, decaying ghost town destined to fade into the forest.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.

A lawn full of retired spacecraft on display at one of NASA's first research labs.

The "Sultan of Swat" once attended a school at the site of this baseball field.

A collection of artifacts from Maryland's maritime past.

A popular European tradition makes its way to the states on one of America's most famous bridges.

The tallest waterfall in West Virginia.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

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.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This historic fort spans more the 300 years.