Groupon is offering a deal to visit the Denver Botanic Gardens at Chatfield Trail of Lights at the discounted price of $10 for two admissions (usually would run you $19). Deadline to buy this deal is end of the day today, Tuesday Nov. 29.You get your choice of paths at Chatfield -- a short trail of twinkling lights takes visitors directly to the children’s play area with its antique tractors. and a tree house of retired elves, while an extended path allows visitors to explore the decorated Green Farm homestead and decorated barn and silo. The event runs from December 2 to January 1 from 5:30-9:30PM. DBG's Chatfield preserve is located in Littleton, near Chatfield Dam.