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

This surreptitious shop is only open five hours per week.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

A huge musical instrument played by the ocean.

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

The start of the group that straightened the teeth of a nation.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

The clock that sets them all.

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

An innovative local park built from an abandoned sewage treatment plant.

The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

In a dry, neglected cemetery lies the unassuming grave of a soldier vilified in life but celebrated in death.

Happen to come across a dead eagle? Send it to America's official dead eagle warehouse.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.

This grand gothic brewery has been pumping out suds for over a hundred years.

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

A diminutive memorial marks the site of a successful assassination by a right-wing death squad in America's capital.

People escaping slavery may have hidden inside a corpse vault.

A Spiritualist house of worship where believers communicate with the dead in the spirit world.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

Marigolds, rosemary, Madonna lilies, and the Virgin’s Bower decorate this Massachusetts sacred garden.

The former home of the oldest nail maker in the United States was built on the ashes of a mill burned by the British.