More than 20,000 butterflies can be seen at this spectacular park and research center.

In a time before lifeguards, this house was a sanctuary for the shipwrecked.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

St. Augustine's record-setting narrow street was designed to protect against pirates.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

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

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

This kitsch eatery is chock-a-block with bric-a-brac.

This museum honors an African-American renaissance man of the early 18th century.

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

This Asian-inspired tower in a lush urban park provides spectacular panoramic views of Baltimore.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

Once America's tallest structure, now a Baltimore landmark.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones’ locker.

Easter in Westminster may be the only time and place to behold Edgar Allen Poe made entirely of Marshmallow Peeps.

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

Built by the patriotic residents of Boonsboro in a single day.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.