Chinatown walking tours: Hawaii Heritage Center offers a historic and cultural tour 9:30 a.m. to noon Fridays. Costs $4. Call 521-2749.
Chinatown Historical Society tours are 10 a.m. Mondays through Fridays. Costs $5. Call 521-3045.
Chinese Chamber of Commerce of Hawaii tours are 9:30 a.m. to noon Tuesdays. Costs $5. Call 533-3181.
Foster Botanical Garden: 1 p.m. weekdays. General admission $5. Call 522-7066.
Hawaii Ghost Tours: three-hour, mini circle, evening bus tour of Oahu's haunted spots, 6:30 p.m. every Saturday. Narrated tour stops at cemeteries, restaurants, hotels, an ancient temple, Morgan's Corner, and the Royal Mausoleum. Fee. Reservations at 596-2052.
Halawa Xeriscape Garden: Free admission to garden of dry-land plants at Halawa Industrial Park 10 a.m. to 2 p.m. Saturdays and Wednesdays. Guided tours are free on Thursdays and the last Saturday of each month; call 527-6113 for an appointment.
Hawaii Ghost Tours: See haunted spots on a three-hour bus tour 6:30 p.m. Saturdays. Narrated tour includes stops at cemeteries, hotels, an ancient temple, the Royal Mausoleum and the Pali Lookout. Costs $22. Call 596-2052.
Hawaiian Railway: Train departs for 90-minute ride through Ewa 12:30 and 2:30 p.m. Sundays from 91-1001 Renton Road. Passengers should arrive a half hour before departure time. Costs $8 general, $5 seniors and children. Reserve at 681-5461.
Ho'omaluhia Botanical Garden, 233-7323: Learn about rain forest plants 10 a.m. Saturdays and 1 p.m. Sundays. Free. Bring walking shoes, bug repellent, rain gear and a picnic.
Urban Garden Center: 9 a.m. to noon Tuesdays, 962 Second St., Pearl City. Call 453-6050. Gardens at the educational center also open on the first Saturday of each month.