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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A stunning landscape of bunkers that once stored chemical weapons.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

A smoke stack so large, the Washington Monument could fit inside!

A 6-mile-long lake created by an apocalyptic seismic event and the deadly chain reaction that ensued.

This massive roadside mascot was the first version of the giant to illustrate his butt.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

The first declared National Monument in the United States.

Multiple monuments to a grizzled old mutt that survived the landscape of Butte's treacherous Berkeley Pit.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

The last street in Pittsburgh that's paved with wood.

Provincetown's night owls flock to this 52-year-old pizza joint.

This mesmerizing kinetic sculpture blossoms endlessly in the breeze.

The vaulted ceiling is home to a scurry of “squirrelgoyles.”

The narrowest street in Paris.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

This public art pays homage to the baseball legend and civil rights icon and his time in Montreal.