Tourist Attraction Image Placeholder Previous Next Home » Place » United States » California » Grass Valley » Empire Mine State Historic Park Empire Mine State Historic Park10791 East Empire Street, Grass Valley, California, United States PhoneDirections This park is home to one of the oldest, largest, deepest, longest, and richest gold mines in California. The park consists of over 800 acres and has eight miles of trails. Dogs on leash are allowed in the park and on the trails. Reviews Leave a comment Leave a Review Cancel replyYou must be logged in to post a comment. Location Loading... No Records Found Sorry, no records were found. Please adjust your search criteria and try again. Maps failed to load Sorry, unable to load the Maps API. Related Posts5 Best GPS Dog Collars & TrackersBest Nail Grinders for Dogs? The 4 Best Choices for 2022The Best Muzzles for All Types of Dogs (Updated 2022)Best Toothpaste for Dogs? 6 Great Choices for 2022Best Calming Vests For Dogs (Updated 2022)