The magic's in the hole!

A heavenly experience, right here on Terra Firma.

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

Tens of thousands of tiny birds swarm into one school chimney every fall.

This sandstone mansion was the home of two of Oregon's most important pioneers.

Is this the most Portland place ever?

The U.S. government built the million-pound stack of steel during the Space Race.

2300-year-old Roman road connecting the empire.

The underground sanctuary of a mysterious ancient cult.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

100 year tradition of fist fights, marked by marble footsteps.

Jesus' footprints and the first catacombs in the world.

A Nesting Doll of Churches.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The oldest operating pharmacy in the world features 800-year-old recipes.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Home to items never before seen by the public.

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

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Decades before the scandal, this staircase on the river was a literal "water gate."

America's first federal monument.

A former major munitions plant that has been converted into a sprawling art space.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.