LynHaven is a beautiful 18 acre park and banquet facility. Company picnics, family reunions, company meetings, luncheons, banquets, weddings, school trips, and much more. We provide all the services to make your visit stress free. Let our professional staff do all the setting up, cooking, serving and cleaning up for We are one of the most unique and largest private parks in southeast Louisiana.. LynHaven is a beautiful 18 acre park and banquet facility. Company picnics,family reunions,company meetings,luncheons,banquets,weddings,school trips,and much more. We provide all the services to make your visit stress free.