Things to Do in Tri Valley California | Comprising the cities of Pleasanton, Livermore, Dublin, San Ramon, and Danville, the Tri-Valley boasts a unique blend of vineyards, historic downtowns, and outdoor adventures. Experience award-winning wineries in Livermore Valley and a vibrant culinary scene, from farm-to-table restaurants to bustling food festivals celebrating local flavors! And outdoor enthusiasts will love the abundance of parks and trails that are perfect for hiking, biking, and more.