A collection of artifacts from Maryland's maritime past.

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

A swimming hole in the historic industrial quarry that supplied the marble for the Baltimore Washington Monument.

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

This suburban house is made of dirt, and almost sparked a revolution in home construction.

Dogs, cats, horses, monkeys, frogs, and fish are laid to rest at the second-oldest pet cemetery in the U.S.

The likeness of the Baltimore music icon was unveiled in time for the anniversary of his Senate hearings on music censorship.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

A lawn full of retired spacecraft on display at one of NASA's first research labs.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

Fascinating museum dedicated to the under-appreciated medical history of urology features some wince-inducing devices.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

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

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

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.