Fall Fest with Friends of Princeton Open Space

Join Friends of Princeton Open Space on Saturday, September 19th for our annual Fall Fest fundraiser at the Mountain Lakes House, overlooking the beautiful lake at the Billy Johnson Mountain Lakes Nature Preserve in Princeton, New Jersey. Reserve Your Fall Fest Ticket

Live music, fall food, craft beer, and nature activities for all ages

Celebrate our dedicated volunteers, land steward interns, and corporate partners as we raise funds in support of our mission-related activities. The community programs supported by this event include paid summer internships, free environmental education community events, and volunteer-powered land stewardship projects.

Event Details

Saturday, September 19th 2025 // 4:00PM - 6:00PM

Mountain Lakes House // 57 Mountain Avenue Princeton

Reserve Your Tickets:

General Admission: $70 per person — starting September 13

Children 12 and under: Free, but must be registered in advance

Can’t attend Fall Fest? You can still support FOPOS Fall Fest by making a donation

Ticket payments by check can be made payable to "Friends of Princeton Open Space" and mailed to PO Box 374, Princeton, NJ 08542.

FOPOS Fall Fest is rain or shine. Attendees must be 21 or older to be served alcohol.

Individual & Corporate Sponsorships are available

Become a sponsor and help power local conservation, hands-on environmental education, and our land steward internship program.