Open Friday through Sunday 4 PM - 9:00 PM. The solar powered space, located in the historic Union Building in downtown Grass Valley, was fully renovated in 2018 by Shih Fu and the Mantra Team, with all-new and sustainable materials. The venue has floating bamboo floors, a stage, and a custom built local hardwood tea & wine bar. Mantra provides a relaxing, pristine environment to host private parties to celebrate with friends and family, as well as hold conferences and non-profit events. Mantra features local beer and wine and has catering options with the healthiest, local, sustainable and farm-to-table ingredients.