Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

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

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Ohio's 19th-century communist micro-society.

The 25th President's marble casket can be visited in this classical Ohio tomb.

Memorials and tributes scattered across the university grounds remember a famous national tragedy of the Nixon era.

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

The spectacular collection of one of the world's best woodcarvers.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

The only presidential monument to display a late POTUS's actual casket.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

The largest earthwork effigy in the world.

The crash of this great airship signaled the beginning of the end for dirigibles.

This massive airship factory is so large that it has its own indoor weather.

One of the largest underground systems runs under Canada's largest urban center.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

Two mermen, eternally spitting into each other's mouths.

A monument to the military service of America's greatest traitor refuses to even name him.

An abandoned asylum incorporated into a college campus.

Memorializing an American tragedy of massive proportions.

The site of the little-known Pennsylvania battle that sparked the Seven Years' War.