16 Unique Late-Night Spots Around the World to Check Out

Off the coast of Puerto Rico, W Retreat & Spa - Vieques Island hosts free Glow in the Dark Yoga classes each month where groups can "flow and glow" in the dark to upbeat tracks spun by the hotel’s DJ. The electrifying Strala Yoga class is complete with body paint, fluorescent black lights, and glowing bracelets, necklaces, and other fun accessories.