Penobscot Tower – 128m July 7, 2017May 3, 2020 paschmann Instagram, Travel View this post on Instagram The Penobscot tower is the tallest public bridge observatory in the world https://en.m.wikipedia.org/wiki/Penobscot_Narrows_Bridge_and_Observatory A post shared by Paul Aschmann (@paschmann) on Jul 7, 2017 at 7:44am PDT