The Friends of Crossroads at Big Creek will host a Work Party on June 16 at 10 am. Volunteers are invited to help with invasive species removal from the Big Creek Preserve. Meet at the Collins Learning Center. Bring work gloves and loppers. At 9 pm the Door Peninsula Astronomical Society will host a viewing night at the Astronomy Campus at Crossroads. Join members in the StarGarden for a tour of the evening sky. For more information visit crossroadsatbigcreek.org. The Collins Learning Center is located at 2041 Michigan Street in Sturgeon Bay.