A summary of a historic event or a structure that no longer exists. Unlike the first category, there is nothing marking the location, and it is instead a time capsule marking where something important was once located. Events must be “pinned” to a specific and relevant place on the map.
Admin, Clio. "World's Largest Time Capsule." Clio: Your Guide to History. December 20, 2015. Accessed October 13, 2021. https://www.theclio.com/entry/19857