The former Mystic Bank building is located in the center of Old Mystic Village, on the west side of Main Street south of its junction with Old Mystic Center Road. It is a modest single-story brick building, with a gabled roof and granite foundation. The main facade is three bays wide, topped by a pedimented gable. Each bay is set in a round-arch recess, with rectangular sash windows in the outer bays and the main entrance in the center bay. Each are topped by stone lintels, with brickwork filling the rounded arch above. The interior retains virtually all of its original finishes, including woodwork, plaster, and flooring; the original bank vault is also still present.
