Gettysburg, PA, United States
Caledonia Furnace. Erected in 1837 by Thaddeus Stevens and James D. Paxton. Stevens' antislavery stand led to its destruction by Gen. Jubal Early, June 26, 1863, on his way to York during the early Gettysburg campaign.
Listen to the audio guide for Blue plaque № 28941 Free on WIP — starts by itself when you arrive, even with the screen off