3615 Euclid Avenue, is a 220,000-square-foot commercial and retail complex in Downtown Cleveland, located just east of Playhouse Square and near the Cleveland State University campus. Completed in 1921, the Romanesque Revival building features an L-shaped plan, block massing, and minimal window openings suited to its original auditorium and Masonic lodge uses. Its exterior is clad in orange-red brick with a sandstone fac¸ade added in 1948, while the interior includes the 1918 Auditorium, 1920 Grand Foyer, and the historic lodge and tower rooms. With significant capital improvements completed between 2018 and 2024, the property offers strong potential for continued entertainment use or redevelopment into luxury residential, hospitality or mixed-use space.