The Arcata Marsh and Wildlife Sanctuary, at the foot of South I Street (tel. 707/826-2359), is a thought-provoking excursion. The 154- acre sanctuary -- which doubles as Arcata's integrated wetland wastewater treatment plant -- is a stopover for marsh wrens, egrets, and other waterfowl, including the rare Arctic loon. Every Saturday at 8:30am and 2pm, free 1-hour guided tours start at the cul-de-sac at the foot of South I Street. Or just pick up a free self-guided walking-tour map of the preserve, available at the Arcata Chamber of Commerce, 1635 Heindon Rd. (tel. 707/822-3619;

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.