The Mahaiwe Block is a commercial and theater building in the heart of downtown Great Barrington, Massachusetts.

[3] The Mahaiwe Block is a roughly rectangular three-storey building, presenting long facades to both Main and Castle Streets.

The Main Street facade includes two storefronts and an Art Deco building entrance, the product of a 1929 remodeling by a banking tenant.

The Castle Street facade has a row of round-arch windows, three commercial storefronts, and the main entrance to the theater.

The street-facing portion of the marquee bears the theater's name in illuminated letters, a detail repeated in compressed form on the sides, above the panels showing the facility's current offerings.