Park entry requires a Recreation Passport (valid for 1 year and allows entry into Michigan state parks) $11 (per private in-state vehicle); $5 (per in-state motorcycle); $31 (per private out-of-state vehicle). Nonresident single-day pass $9 (per private out-of-state vehicle). Conservatory, aquarium and zoo free. Slide $1 per ride. Museum by donation.
Park daily 5 a.m.-10 p.m. Museum and aquarium Sat.-Sun. 11-4 (also Fri. 11-4, mid-June through Labor Day); closed major holidays. Conservatory Wed.-Sun. 10-5; closed Jan. 1, Thanksgiving and Christmas. Nature Zoo Wed.-Sun. 10-5, Apr.-Nov.; 10-4, rest of year; closed Jan. 1, Thanksgiving and Christmas. Deer feedings are given daily at 11, 1 and 3. Fountain runs 10-9, mid-June to late Sept.