At just six feet two inches deep, it is said by Guiness and Ripley to be the world’s narrowest freestanding office building.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

This enormous photomural pays homage to Vancouver's infamous history of public activism.

Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

This symbol of peace is appropriately positioned overlooking the Pacific Ocean.

This 18th-century sundial was designed to calculate the date of Easter each year.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

Two graffiti towers stand like ghosts of Vancouver's World War II-era defensive outpost.

Thanks to a bit of wordplay, seven auspicious stone cats guard this ancient canalside street.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

This small Catskills village has six independent bookstores and more bookshops than restaurants.

Every year, the colorful murals of Montreal get a complete makeover.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

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

These two monoliths have stood at the entrance to the neighborhood since the days it was called "Hollywoodland."

This centerpiece of the Hollywood & Highland shopping center is a recreation of a long-lost movie set.

A rare chance to ride one of the few continuous elevators still in operation.

The decor of this Hollywood movie palace just barely predated the opening of King Tut's tomb.

This enormous World War II relic is one of the largest wooden structures in the world.

A unique spiral staircase that doesn't quite make it up to the top floor.

This sprawling woodland estate was the brainchild of iconic American industrial designer Russel Wright.