Action sites are places where people can go to experience or participate in activities. The two crossword solutions for the term 'action sites' are theaters (8 letters) and VENUES (6 letters). Theaters are places where people can go to watch live performances, such as plays, musicals, and operas. VENUES are locations where events, such as concerts, conferences, and festivals, take place. Both theaters and VENUES provide people with opportunities to engage in activities and be entertained.