Thirty years ago, the discovery of a roost of bald eagles on the grounds of this former weapons plant helped spur a massive cleanup, one that transformed one of the metro area's most polluted sites into a 15,000-acre refuge for wildlife — and the rest of us. The nine-mile, self-guided Wildlife Drive, open seven days a week, is the perfect way for the busy urbanite to get acquainted with the arsenal's grasslands, wetlands and woodlands while catching a glimpse of some of the 330 species of wildlife to be found here, including bison, raptors, deer and coyotes. Hiking, birding and a two-hour bus tour are also available, all ways to reconnect with nature without ever leaving the city of commerce.