The highest point in Maryland is only accessible by hiking through another state.

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

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

A small granite block at this monument's base is the only part of Lincoln's Tomb outside of Illinois.

Each step is a mere 4 inches tall, said to be measured by the stride of a woman wearing a hobble skirt.

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

A preserved 18th century homestead in Western Pennsylvania marks the spot where the Whiskey Rebellion began.

Could it have picked a better place to land?

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

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A monument celebrating the idea of reaching inaccessible places.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

The highest point in Washington state is a volcano covered in glaciers.

A walk through the historic city center, under the streets of Seattle.

An eerie smiling woman looms above the granite tombstones.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

Ruins of a Carnegie family mansion on Cumberland Island.

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

Elevated freight railway turned wildly successful urban park.