Organization: National Park ServiceLocation: 1849 C St NWWashington, DC, 20240United StatesSee map: Google MapsPhone:202-208-6843 Free Entrance Days in the National Parks!Dates: 04/20/202406/19/202408/04/2024Show more datesHide these dates09/28/202411/11/2024Time: See website for details. Organization: Common Ground High School, Urban Farm, and Environmental Education CenterLocation: 358 Springside Ave.New Haven, CT, 06515United StatesSee map: Google MapsPhone:(203) 389-4333 School Vacation Day Program - Common Ground High School, Urban Farm, and Environmental Education CenterDates: 03/29/202404/10/202404/15/2024Show more datesHide these dates04/16/202404/17/202404/18/202404/19/2024Time: 8:30am - 3:00pm