The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Former villa and estate of James Deering developed to preserve native tropical forests.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

This lakeside tower is the third attempt at getting a tourist destination to stick on the spot.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

A lighthouse on a diminutive island was one of the first of its kind to guide seamen home.

This delicate museum is devoted to the art and industry that once supported Cape Cod's oldest town.

Artifacts of whaling, with both its perils and adventure, are housed in this museum in a former candle factory.

Statue commemorating the use of ether in anesthesia.

For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

It's not a typo, now say it five times fast!

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

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

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

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

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

The site where Poe “in great distress, and ... in need of immediate assistance” likely died.

A museum dedicated to exhibiting remarkable outsider art.