A dedicated space set up for BDSM play, either in a private home, a club, or a rented venue, equipped with furniture and gear like suspension frames, spanking benches, or St Andrew's crosses.
Dungeons exist so that play can happen in a controlled setting with the right equipment on hand, and many people find that a purpose-built room helps them shift into the headspace for a scene. Public dungeons usually operate on a membership or party basis and enforce house rules about consent and conduct.
Worth knowing: Equipment should be checked before use, scenes should be negotiated in advance, and anyone using a shared or public dungeon should know the venue's safeword system and where aftercare space is available.
Also called: playroom, playspace, dungeon party, club dungeon, private dungeon, community dungeon