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

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

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

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