This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

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

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

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

At this former Prohibition speakeasy, electric birds signaled the arrival of hooch.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

Baltimore's first skyscraper may be home to the inspiration behind pulp fiction's most celebrated bird.

Public opinion is still divided on this enormous sculpture in front of Baltimore's Penn Station.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

The unusual patterns in this rock formation result from two distinct modes of weathering.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

The fifth-longest natural arch in the world, and the longest outside China.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

See massive fossils that are over 200 million years old in northeastern Arizona.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

A restaurant on Staten Island showcases a different grandmother’s cooking every night.

One of Chicago's last seafood smokehouses perfects a dying breed of fishcraft.

Puerto Rico's oldest rum producer started its 140-year-old business with "a little barrel."

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.