See what remains of a once grand ancient Roman circus.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

The odd depiction of the Virgin Mary and baby Jesus is rooted in the Catholic Church's eradication of Catharism.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

Imagine having a street run right through your home, or better yet, a historic bridge three stories high.

Worm salt and other local ingredients are on the menu at this cult favorite ice cream shop.

At a museum of everyday objects, it is the act of collecting that is really on display.

This painted blacktop brings the classic arcade game to life.

The Denny Substation has been called "the coolest substation in the world" and sits in a densely populated Seattle neighborhood.

Remnants of a forgotten 1920s speakeasy and Prohibition-era murals were discovered in its basement.

Seattle's super-sized cowboy apparel once belonged to a themed gas station that wrangled in herds of tourists.

Inside this curiosity shop, visitors can peruse the clown collection or purchase a molar from the mouth of Bigfoot.

The final resting place of one of the most sensational guitar players of all time was created only after his father got the rights to his music.

This unique library spans a mighty river.

The deepest hole drilled in the name of science, where evidence of Precambrian life was found.

Eat like a bird in a bamboo nest.

The world's last remaining store of its kind.

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

This quirky little private museum is home to more than a thousand stones, carved by nature, that resemble human faces.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

This dazzlingly turquoise mountain lake was created in the wake of a natural disaster.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Five varieties of trees with custom-designed grates around the trunk are planted along the route of the Seattle Transit Tunnel.

The four tall pillars once marked the entrance of the historic Seattle church that fought for women's suffrage and civil rights.