Weekend nature retreat: Audubon Center of the North Woods

It's an environmental learning center. It's a refuge for wounded raptors. It even hosts an annual trail race. But the Audubon Center, a 535-acre sanctuary of forests, wetlands and prairies on the shores of pristine Grindstone Lake near Sandstone, also offers summer camps, educational programs for kids and adults, and weekend retreats including the Women's Wellness & Adventure Weekend, promising "adventure, relaxation and renewal." If you want to get back to nature (without nature getting back at you), this is your place.