Berlin's old airport.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

There's an exclusive Beefeaters pub hidden in the Tower of London.

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

At this airport "microcinema," you can catch a film before you catch a flight.

A 200-year-old collection of oddities and medical paraphernalia.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

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

A tribute to a unique bike race that takes place every year.

Hidden in Portland’s West Hills, a 170-year-old marker literally stakes out the Pacific Northwest.

This theatre and its amazing marquee harken back to the Golden Age of Hollywood.

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

The world's last remaining store of its kind.

Statues of Ramona Quimby, Henry Huggins, and Ribsy the dog in the park where their adventures "really happened."

This charmingly homemade amusement park has been growing for 40 years.

In 2018, Pohoiki Road was severed by lava flowing from the eruption of Kilauea.

This legendary urban waterfall creates a dazzling display of rainbows.

This black shoreline is made up of exploded lava particles.

A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.