Without frequent exposure to art, viewers may struggle to discern whether they're looking at an impressionist masterpiece or out a heavily smudged window. Start your eye-training with today's Groupon: for $10, you get one admission to “Shades of Night: After Hours at the Dalí Museum” (a $21 value). Choose from the following dates:

• Wednesday, September 7, from 6 p.m. to 8 p.m.
• Wednesday, September 14, from 6 p.m. to 8 p.m.
Wednesday, October 5, from 6 p.m. to 8 p.m.

Set amid the largest collection of Dalí's work outside Spain, the Groupon-exclusive “Shades of Night: After Hours” bash combines world lounge music with docent-guided tours of the Dalí Museum. Visitors can feast their eyes on essential works and lesser-known pieces in journeys that parallel Dalí's career. Each night, a different DJ spins international jams for dancing and movement-based interpretations of melting clocks. Though not included with the Groupon, Café Gala throws open its doors to reveal a bounty of Spanish-themed tapas, desserts, and glasses of Shades of Night sangria ($3). Silent films presented in the museum theater tickle the eyes as tarot readings extract secrets from the future with fate-drenched cards and cryptic notes disguised as utility bills.