This isolated community does not want you to visit.

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

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

The trials and tribulations of marking Poe's grave.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

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

Two dozen pinball games hidden away inside a most unlikely location.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

A memorial to a shareholder activist feared by CEOs around the United States.

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

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Northern Ireland's Brobdingnagian stepping stones.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Rising from the sea like a stone monster.

2300-year-old Roman road connecting the empire.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

The world's second-largest sundial, made entirely out of stone.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

Sacred Indian temple that’s all monkey business.

A blooming house of worship for the masses.

An ancient iron pillar in Delhi that seems to be rustproof.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

A nearly unconquerable island-fort in the Indian Ocean.