We took a trip out to Philly the weekend before Christmas to visit the Zoo's Luminature exhibit. The Exhibit begins at 5 PM on select days where the zoo decorates the zoo with various "holiday" lights throughout. The main attraction is a 30+ foot polar bear where light is projected upon set to music and a show. This runs every 30 minutes and lasts about 5 minutes, so make sure you get a good viewing spot. The tickets are about $20-25 per person which I thought were on the higher end, but on par with similar attractions. ZOo members get a few dollars off. The zoo parking lots are opened during this time and cost the usual $16 per vehicle unless you are a member which allows parking for one vehicle per visit. Overall we had a great time and am glad we took advantage of our membership to visit this year to get the free parking and discounted tickets. I don't think it is worth it for those who aren't members and going without a discount....a family of 4 with parking would run about $120!!! which I think is a lot for what you get. There probably should be a package deal offered, which includes admission the zoo itself, and admission to the light show later on that same day...maybe throw in parking. That would be worthwhile. By the way, we did attend the first 5 PM show and it was crowded. Lots of strollers and minimal walking spaces near the bigger attractions and narrow paths. You may want to pick a later time, or go during the week. The zoo may also want to further limit the ticket sales per time slot..which is the whole purpose of giving time slots. We took a trip to the Philadelphia Zoo fro NYC. We got there around 11 AM on Wednesday morning and the place was practically empty except from a few camp trips there. The main parking lots still had lots of space. Parking is $16. Though the surrounding neighborhood isn't the best, the short walk from the parking lot to the zoo entrance is safe. The admission to the zoo is about $20-25. There are lots of animals at the zoo, all with adequate space. All animals appeared to be well maintained and cared for. As with most zoos, the earlier you get there the better..less crowds, closer parking and active animals. There are a few areas to grab a bit to eat as well as restrooms. Unfortunately, it was raining quite a bit that day so our trip was cut short. We plan on attending again soon. Keep in mind that if you plan to visit more than once in a year, the membership might be worthwhile. The membership includes unlimited admission for one year and includes parking and discounts at the zoo store and eateries throughout the zoo. There is food for sale during this time.