An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

An unusual round church in London with a Templar past.

Dictionary Johnson’s favorite feline.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

A submerged archeological park still holds the wonders of a Roman Sodom.

This 15th-century structure had a long, tortuous journey to its current location.

A sculpture in a secluded garden honors one of Edinburgh's most innovative thinkers and city planners.

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

The colorful stairs are made with marble from the world's major quarries.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

A mental health hospital dating back more than 139 years, now features a museum.

This memorial pays homage to Pueblo's four Medal of Honor recipients.

This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.

This historic stone barn is the former home of legendary cattleman Charles “Lonesome Dove” Goodnight.

This nearly abandoned town was once a thriving mining community until a series of fires.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

A collection of fading fantasy tchotchkes lines this dirt road in the Colorado wilderness.

Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

This aluminum airplane pays homage to the Flying Tigers of World War II.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.