New York State Park · Albany County
Six miles of limestone cliff-face along the Helderberg Escarpment, one of the richest fossil-bearing formations in the world. Rock-strewn slopes, woodland and open field run back from the edge.
$6 per vehicle — Vehicle Entrance Fee: $6.00 Collected 9am-5pm daily May 1 - October 31 Buses: $35
The park is open year round, sunrise until sunset.
Day Use/Picnicking/Hiking/Nature: Available year-round.
WildPlay at Thacher 2026 Hours
May 9-June 28: Saturday-Sunday (10am-5pm)
Juneteenth, June 19: (10am-5pm)
July 1-September 6: Monday-Friday (10am-5pm) & Saturday-Sunday (9am-6pm)
September 7-October 31: Saturday-Sunday (10am-5pm)
Hours as published by NY State Parks. Check the official page before a long drive.
Emma Treadwell Nature Center is open Tuesday-Sunday from 9am-4pm, Closed Mondays.
The Nature Center is also Closed all day on Thanksgiving and Christmas, and after 12:30 pm on December 24th.
Visitor Center and Restrooms : Open 7 days a week 9am-4pm (Closed Thanksgiving and Christmas Day)
Warming Hut at Hop Field: Open daily 7:30am-5pm through May 24. Open by reservation only Memorial Day-Labor Day. Warming Hut restrooms open daily year-round.
Schedules for pools, museums, campgrounds, tours and other facilities inside the park, as published by NY State Parks — not the park's own opening hours.
Phone518-872-1237
Address830 Thacher Park Road, Voorheesville, NY 12186
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