A 300-foot-long Cold War submarine floats in a Chilean River as a maritime museum.

This propitious plastic porcine has been petitioning park visitors to pick up after themselves for more than 50 years.

Proto-CIA agents trained with grenades in the sand traps and fired machine guns from the fairways.

This massive swimming pool is the high tech home to the human-powered submarine races.

Surrounded by traditional homes, this Tolkien-esque dwelling stands out on a quiet street in suburban Maryland.

A museum dedicated to exhibiting remarkable outsider art.

A hidden alley in urban Baltimore is a haven for graffiti artists.

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

Brain collection and database that narrows the gap between man and animal.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

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

A rural colonial settlement that contains the remains of a store and cooper.

A Maryland museum dedicated to Black history, housed in a historic church.

A set of rowhouses built for laborers at a glass company are the last of their kind in Annapolis.

This statue of two men in a rowboat was erected to honor those who died while fishing in the Chesapeake Bay.

The last remains of one of the oldest and largest oak trees in the United States calls this state park home.

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

The land is home to swimming ponies and a legendary 18th-century treasure.

Explore the legends surrounding these mythical sea creatures inside this museum.

The grounds of former plantations where abolitionist Harriet Tubman spent her youth enslaved are now a museum to her incredible life.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.