# Tryon Creek State Natural Area Winter Forest Discovery & Nature Center > Place to go for families in the Portland–Vancouver–Hillsboro area (OR / WA). Times are Pacific Time. - When: Open on its own schedule - Where: Tryon Creek State Natural Area, 11321 SW Terwilliger Blvd, Portland, OR 97219 - Ages: All ages; paved all-access trail and nature center - Price: Free admission; free parking - Organizer: Oregon State Parks & Friends of Tryon Creek - Official page: https://stateparks.oregon.gov/index.cfm?do=park.view&parkId=103 - Last checked: Thu, Nov 5 Source: Grassy Knees is a directory of real family events, places and programs for kids across major U.S. metro areas, where every listing is researched from the organizer’s own page and shows the date we last checked it. https://grassyknees.com covers 42 metro areas as of Nov 11, 2026, with more added regularly. About: https://grassyknees.com/about Freshness: listings are re-checked on a daily research run (latest check 2026-11-10), and new events are added as organizers post them. Sell-outs, weather cancellations and time changes show up on the live page first: https://grassyknees.com/portland/activities/tryon-creek-state-natural-area-winter-forest-discovery-and-nature-cent--listing-3d0056916ad2c11c6fae2ba5 ## About Spanning 658 acres of lush second-growth rainforest between Lake Oswego and Portland, Tryon Creek State Natural Area is Oregon's only state park located within a major metropolitan area. In winter, the emerald-green forest shines with mossy bigleaf maples, western red cedars, and sword ferns nourished by seasonal rains. Families with little ones can explore the 0.3-mile paved Trillium Trail, which features barrier-free wooden viewing decks, tactile guide ropes, and benches overlooking the rushing waters of Tryon Creek. The Tryon Creek Nature Center offers hands-on discovery drawers, taxidermy animal specimens, a cozy stone fireplace, and free junior ranger nature scavenger hunt sheets. Family Experience & Accessibility: • Stroller Accessibility: The paved 0.3-mile Trillium Trail is fully barrier-free and designed specifically for strollers, wheelchairs, and young walkers; the Nature Center is ground-level ADA accessible. • Nursing & Rest Spots: Nature Center provides clean family restrooms with baby changing stations and fireside benches for feeding and resting. • Age Suitability: All ages; ideal for toddlers building outdoor stamina and families with infants in strollers. • Sensory Tips: Soothing sounds of raindrop drippings, creek currents, and chattering Pacific wrens; forest canopy provides natural shelter from gentle winter showers. ## Similar picks in Portland - [Tryon Creek Thanksgiving Family Nature Stroll & Discovery Center](https://grassyknees.com/portland/activities/tryon-creek-thanksgiving-family-nature-stroll-and-discovery-center--listing-1bbcf257244f310c4051638c) — Fri, Nov 27 · 10:30 AM · Tryon Creek State Natural Area Nature Center · All ages · Free · checked Nov 7. 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