There's a bunch of really interesting declassified documents if you want to go down a historical rabbit hole. A long time ago I remember reading top secret messages that were sent back and forth between Kennedy and his military strategists in the days leading up to the Bay of Pigs. Feels like reading history from the source.

The remote viewing declassified documents available at the CIA reading room are mind blowing IMO. Keyword to search: "GRILL FLAME"