Dinnerhorn and Bratskeller Restaurant Inc Portsmouth, NH Businesses Prescott Park Arts Festival, Inc. Seacoast's only outdoor theater. Consider yourself one of the family this summer with our mainstage performance of Oliver! Music, visual arts and children's series from June through October. Don' Portsmouth, NH Arts Harborside Athletic Club Portsmouth, NH Other Attractions Hampton Inn Portsmouth, NH Businesses Friends of Portsmouth Harbor Lighthouse Portsmouth, NH Other Attractions