Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

The unusual patterns in this rock formation result from two distinct modes of weathering.

On the Oregon coast is a natural hole that seems to be draining the sea.

The blinking light atop the iconic landmark has been sending secret messages for decades.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

Ancient Egyptian relief, claimed to depict an electrical light.

One of the most well-preserved temples of ancient Egypt.

This unassuming tree stump reportedly traces its roots to the famous pharaoh queen's reign.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

The narrow passages will challenge even the bravest driver.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

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

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

Home of Howard Hughes' Spruce Goose.

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

This stoic, if derpy, giant stands as a monument to Oregon's statehood and the novelty culture of yesteryear.

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

Portland had a unique approach to Cold War-era protections.

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

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

This statue and park honor the Swedish chemist Jacob Berzelius, one of the founders of modern chemistry.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Stockholm's deepest subway station is also a stunning ecological wonder.