The oldest farmer's market in America is so ancient it was approved by the King of England.

A monument marks the beginning of the longest north-south road in the United States.

The longest covered bridge in Delaware.

The first marker along the famous boundary.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

The taxidermy remains of the most popular pony in children's literature.

This historic lighthouse was well known for the large number of women who served as its keeper.

The meeting of the northwestern corner of Delaware, the northeastern corner of Maryland, and the southern edge of Pennsylvania.

This semi-spooky remnant of an abandoned hotel provides fantastic views.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

The longest-covered bridge in the state of Maryland.

This nine-story building can be played like an instrument.

Hidden in this little-known town stands a piece of agriculture history.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

A storybook church made from a mesmerizing medley of multi-colored stones.

This plaque marks a place where one of Hollywood’s most famous dancers got his start.

A home built with marble tombstones from the graves of 2,200 Union soldiers buried in a Virginia cemetery.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

Get up close and personal at this Fresnel Lens.

Inside the unassuming cemetery chapel is a magnificent stained glass window and mosaics.