Chinatown walking tours: Hawaii Heritage Center offers a historic and cultural tour 9:30 a.m. to noon Fridays. Costs $4. Call 521-2749.
Chinese Chamber of Commerce of Hawaii tours are 9:30 a.m. to noon Tuesdays. Costs $5. Call 533-3181.
Contemporary Museum, First Hawaiian Center: Docent walk-in tours noon every third Thursday.
Contemporary Museum, Makiki Heights: Docent walk-in tours 1:30 p.m. Tuesdays through Sundays; and 11 a.m. and 1:30 p.m. every third Thursday. Call 526-1322.
Foster Botanical Garden: 1 p.m. weekdays. General admission $5. Call 522-7066.
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 Geographic Society: Downtown Temple, Archaeology, or Historic Downtown Honolulu escorted walking tours, every Sunday. Minimum of 2 people. Tours last 2-3 hours. Cost: $10 per person. Tours offered other days by request only. Information, 538-3952.
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 $25. Call 596-2052.
Hawaii Theatre: Hour-long tour of the $22 million renovation which includes the "front-of-the-house," insights into historic restoration, the theatre's history, and an introduction to the 1922 Robert Morton Theatre Organ. At 10 a.m. and 2 p.m. every first Monday of every month. Cost: $5. Call 528-5535.
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: 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. Call 233-7323 for reservations.
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.
Wahiawa Botanical Garden: 1 p.m. Sundays. Free. Call 621-7321.