Chamber

An enclosed room, often in a palace or castle.

room enclosure

A chamber is a private or enclosed room, especially one in a palace, castle, or large house.

/ˈtʃeɪmbər/

From Old French chambre, from Latin camera (room), ultimately from Greek kamaros (curved).

compartment vault recess

room space

bedroom study cell

walls floor ceiling

building house

architectural building feature