r/ArchitecturePorn - The US Air Force Memorial, Arlington, Virginia [OC] [OS] [1500x1000]
https://www.reddit.com/r/ArchitecturePorn/comments/apuk55/the_us_air_force_memorial_arlington_virginia_oc/
r/evilbuildings - Winter fortress
https://www.reddit.com/r/evilbuildings/comments/afewac/winter_fortress/