MSI does the holidays big—discover 30,000 twinkling lights on a 45-foot Christmas tree.

Secure your spot on the naughty or nice list at the ultimate Christmas party. This jolly event is back for a third year, giving you the chance to visit one of the city’s most beloved holiday traditions with an adults-only twist.

Warm up with festive beverages while exploring more than 50 trees and displays that feature new decorations for our annual Christmas Around the World and Holidays of Light exhibits. Take photos of handmade ornaments from cultures around the world, watch snow fall indoors, and snap a selfie with Santa and our dazzling Grand Tree. Thanks to a bit of liquid courage and a lot of holiday spirit, you might even belt out your favorite holiday tune. We have you covered with "carol-oke" in the Giant Dome Theater.

Event Details

Also new this year, a DJ with a surprise accompaniment, more photo opportunities, a scavenger hunt, and access to even more exhibits including the U-505 Submarine. Plus, they’re back and they’re watching. Santa Claus and Krampus return to ultimately decide whether you’re being naughty or nice.


Friday, December 6 from 7 to 11 p.m. (21+)
This is a 21+ event. Admission costs $30 (MSI members: $25) and includes free parking in our underground garage, coat check, a complimentary drink, and access to select exhibits. A cash bar will be available. Food is available for purchase.

Register online

Tickets to MSI After Hours are nonrefundable.

Questions? Email us at

Take a look at our event map to see what exhibits will be open.