All Souls Church, Unitarian

Founded in 1821 as the First Unitarian Church of Washington, the institution has a long history of supporting our nation’s biggest social issues, such as abolitionism, civil rights, women’s equality and, most recently, same-sex marriage. All Souls is also known for its eclectic musical programs, which are open to all. Sunday services, for example, may feature a medley of jazz, ancient church chants, South African beats and gospel. Free lunch follows in Pierce Hall.