(WHTM) — A slow-moving train heading west crosses the Susquehanna River on the Rockville Bridge, north of Harrisburg. Did you know Pennsylvania is home to the longest stone arch bridge in the world?

The Stone Arch Bridge’s sturdy design and gentle curve allowed for efficient, high-speed rail transportation, a significant advantage in an era when speed was paramount. The Union Depot opened ...

Rachael Hood, Senior Editor The Stone Arch Bridge is a must-see for any architecture buff. This 2,100-foot granite and limestone bridge (featuring a total of 23 arches) was constructed in 1883 and ...