The Restaurant On20 is located in the Polytechnic Club. Opened in November 1984, the executive dining facility was built in Hsb’s new headquarters at One State Street, former company president Wilson Wilde wanted to give it a name with significance and dubbed the elegant eatery The Polytechnic Club for the group of young men who inspired the formation of Hsb. The Restaurant On20 features a menu of fine dining entrees, side dishes, desserts and appetizers.