Amusement parks; Arranging and conducting of concerts; Arranging and conducting of entertainment and educational conferences in the field of social science, science, art, ecology, entrepreneurship; Arranging and conducting of seminars in the field of social science, science, art, ecology, entrepreneurship; Arranging and conducting of symposiums in the field of social science, science, art, ecology, entrepreneurship; Arranging and conducting of workshops in the field of social science, science...