Reading, PA, PA RDG.i-77 exit 72 hotel casino PANAMA GAMBLING AGE Treasure Island. Email Sign up. Casino. Location. Treasure island resort & casino. Sturgeon Lake Road, Welch, MN. Treasure Island Resort & Casino. Show Prices. Check In Check Out. reviews. #1 of 1 Hotels in Welch. We take our guests comments very seriously. We offer the largest non-smoking casino area in the state of Minnesota. This area, located near the BINGO entrance, includes 8 Blackjack tables. Use this simple form to find hotels, motels, and other lodging near the Treasure Island Resort and Casino in Welch, Minnesota.