Alamosa National Wildlife Refuge
Less than an hour's drive southwest of Great Sand Dunes is a sanctuary for songbirds, waterbirds, and raptors (it's also home to many other types of birds, along with mule deer, beavers, and coyotes). The Rio Grande runs through the park comprising more than 12,000 acres of natural and man-made wetlands. You can take a 4-mile hike round-trip along the river or a 3½-mile wildlife drive on the park's western side or a drive along Bluff Road to an overlook on the park's eastern side. The refuge office is staffed by volunteers sporadically from March through November and closed in winter, but a self-service kiosk provides visitor information year-round.