The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

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

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

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

An elegant sandstone stairway built by the WPA still connects two neighborhoods in Akron.

Hundreds of protractors affixed to surfaces all over the city.

A giant ball made from pieces of an old Jeep.

The Master of Magnetism dominates the walls of a scrap metal yard to keep graffiti artists at bay.

Within this beautiful Pittsburgh cemetery, a unique headstone bears witness to one man's eternal love for Jaws.

Canada's subterranean Cold War museum has doubled as a movie set.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

A former copper mine which became a truly unsuccessful prison.

Legend says that this short Canadian tunnel still holds the dying screams of a girl who burned alive.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

These World War I shooting range tunnels are now haunted halls of underground graffiti accessed through the roots of a tree.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

A painfully obvious spy house sits right across the street from the Russian Embassy.

The tunnel under the Capitol Building where Congress takes out its trash.

These abandoned waterworks are crumbling into the Potomac River.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

This colorful creation wasn't always a welcome part of Toronto's Moccasin Trail Park.

A fantastic array of trays and cables once whisked books over to the Capitol at 600 feet per minute.