Once a busy river port sending military supplies shipped from California to forts and camps in the Southwest to fight the Apache wars, today Yuma is a winter retreat for thousands of visitors craving its warm, dry and sunny climate. With warm weather comes golf, and the city has several excellent courses. Bird watchers will enjoy the Imperial National Wildlife Refuge, which is rich in migratory bird life and also offers hiking, fishing and boating facilities. For a step back in time to the days of frontier justice, visit the Yuma Territorial Prison State Historic Park, whose prison dates back to 1876, or the Yuma Crossing State Historic Park, for a walk through restored historic buildings. If these sites whet your appetite for more pioneer lore, check out the Century House Museum, which is chock full of pioneer artifacts and exhibits. And, speaking of appetite, be sure to stop for burgers and fries at Lutes Casino, Arizona's oldest pool hall, where old movie memorabilia graces the walls.