Altoona, PA, United States
Allegheny Furnace. Opposite are remains of furnace built in 1811, the second in this section. It was operated until 1884. The stone store building built in 1837 is the oldest in the city of Altoona.
Listen to the audio guide for Blue plaque № 28499 Free on WIP — starts by itself when you arrive, even with the screen off