This Roman arena once played host to bloody gladiatorial battles.

A dictator's failed public works project has been reborn as two linked trails through spectacular scenery.

A display of torture devices used in the Spanish Inquisition and other scourges of medieval Europe.

Stunning Roman aqueduct used for 1900 years and still standing.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

Multiple waterfalls and several historic CCC buildings anchor this state park in Oregon's Willamette Valley.

Atop an active stratovolcano, two lakes separated by a narrow strip of land.

This Portland Art gallery doubles as a studio that supports adults with intellectual and developmental disabilities.

A Roman-style column in Oregon hides a spiral staircase inside.

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

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

A volcanic fissure over two miles long and up to 70 feet deep.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

10,000 flowered plants bloom in the City of Roses.

Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

100-year-old shipwreck you can walk up to at low tide.

A massive sea stack famous for its appearance in The Goonies.