Organization: Milwaukee RiverkeeperLocation: 600 E Greenfield AveMilwaukee, WI, 53204United StatesSee map: Google MapsPhone:414-342-0892 29th Annual Milwaukee Riverkeeper Spring CleanupDates: 04/20/2024Time: 9:00 AM - 12:00 PM Organization: Urban Ecology CenterLocation: Multiple LocationsMilwaukee, WI, 53215United StatesSee map: Google MapsPhone:414-626-8571 Adult Adventure Series - KayakingDates: 05/10/202405/17/202405/24/2024Time: 4:30 pm - 6:30 pm Location: Mansion on the Slope, Cornell University730 University AveIthaca, NY, 14850United StatesSee map: Google MapsPhone:650-283-5440 Camp Fandom MultiverseDates: 07/01/202407/02/202407/03/2024Show more datesHide these dates07/04/202407/05/202407/08/202407/09/202407/10/202407/11/202407/12/202407/15/202407/16/202407/17/202407/18/202407/19/202407/22/202407/23/202407/24/202407/25/202407/26/2024Time: 1:00pm Organization: Camp Interlaken - Milwaukee, WILocation: 7050 Old Highway 70Eagle River, WI, 54521United StatesSee map: Google MapsPhone:(715) 479-8030 Family Camp at Camp InterlakenDates: 08/13/202408/14/202408/15/2024Show more datesHide these dates08/16/202408/17/202408/18/2024Time: All Day 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: Urban Ecology CenterLocation: Multiple LocationsMilwaukee, WI, 53215United StatesSee map: Google MapsPhone:414-626-8571 Green Birding ChallengeDates: 05/11/2024Time: 6:00 am - 12:30 pm Organization: DIGIVATIONS CAMP DEMIGOD INSTITUTE at Cornell UniversityLocation: 757 Warren Road, Ste 4988 Summer: Upstate NYIthaca, NY, 14850United StatesSee map: Google MapsPhone:650-283-5440 Harry Potter Sustainable UniverseDates: 07/15/202407/16/202407/17/2024Show more datesHide these dates07/18/202407/19/202407/22/202407/23/202407/24/202407/25/202407/26/2024Time: 1:00pm Organization: Milwaukee County ZooLocation: 10001 West Blue Mound RoadMilwaukee, WI, 53226United StatesSee map: Google MapsPhone:(414) 771-3040 Party for the Planet – River CleanupDates: 04/20/2024Time: See website for details. Snowshoeing and Cross Country Skiing Near Milwaukee Visiting Sedona, AZ