From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

Essence of hound's tongue and tincture of bloodroot are just the tip of the herbalist iceberg at this beautiful, impressively-stocked apothecary.

A beautiful final resting place for some of the noteworthy deceased.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

A walk through the historic city center, under the streets of Seattle.

One of the world's tallest, oldest, and most disgusting chocolate cascades.

A beautiful 62-acre Catholic shrine and botanical garden.

A heavenly experience, right here on Terra Firma.

Beyond being incredibly fun, not much can be said about the Hole with certitude.

An emporium for the weird, creepy, rare, and just plain gross.

The seamy, underground secrets of Portland's criminal past.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

An 18-mile-long tunnel for sewage waste will soon wind within the bowels of Washington, D.C.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

Located at the former Lorton Prison the Lucy Burns Museum tells the story of the 91 year history of the prison including the dark chapter of its involvement in the women's suffrage movement.

Colorful lights and mirror-like brine pools create trippy illusions within the historic mine.

100 years later, they're still down there.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

An overlooked oasis of quiet on the grounds of Washington's monumental basilica.

There’s a special club house at the top for the bell ringers.

There's a crumbling old mansion inside the Smithsonian National Zoo.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

People escaping slavery may have hidden inside a corpse vault.