watchtower Synonyms

lookout tower observation tower lookout post radar watch vanguard turret tower spial sign sentinel rocket picket pharos outlook beacon light signal fire guard tower watch house sentry post fire tower observation post lookout station lightship gazebo observatory nightjar fanal derrick conning tower cockloft bonfire belvedere beam beacon barbican balefire bailey attic alert flare fort garret mirador loophole lookout loft lighthouse light lantern