The free Happy Ecology Experience on the old path near Sangdang Fortress in Cheongju runs April 1–November 13, 2026, from 10 a.m. to noon on Tuesdays through Fridays. November's topic is how forest life survives winter. The first-come online application period ends November 11 at 23:59.
Groups of 5–20 can join, with participants born in 2023 or earlier (age four+ under the 2026 rule). Across all participating Cheongju parks, one group can apply for up to three sessions per month. Applications or cancellations should be made two days ahead; call the organizer afterward.
Address: 301-3 Myeongam-ro, Sangdang-gu, Cheongju. The meeting office is uphill toward the mineral spring entrance from the Myeongam bus terminus, not toward Namu Hotel. City guidance warns of vehicle and pedestrian inconvenience due to ecological park construction through the end of December. Phone: 043-201-4449.