Illustrated print of an "ugly" sweater with snowflakes and dinosaurs

Ugly Sweater Weekend

National Ugly Sweater Day is December 20, but we’ll be celebrating all weekend. Put on your favorite, ugliest sweater and get festive at Ugly Sweater Weekend at PacSci! Make a miniature ugly sweater in Tinker Tank, challenge your friends and family to a snowball fight in SNOWZONE, and see Laser Winter Magic in the Laser Dome.

Make sure to get your photo taken with the Abominable Snowman! This friendly giant will be available for photo-ops with the whole family during two sessions on Saturday and Sunday from 10 a.m. – 12 p.m. and 2-4 p.m.

We’re celebrating the opening of Star Wars during Ugly Sweater Weekend, too! The 8-Bit Brass Band is playing some of your favorite Star Wars tunes on Friday, plus giveaways and appearances from stormtroopers and other characters all weekend. 

Our IMAX theaters are also showing Elf, Gremlins, and our latest documentary Back From the Brink. Add one of these great movies to your general admission ticket! 

Special Offers

Save 10% on general admission by saying “Be curious. Get crafty” when purchasing tickets at the North or South Entrances.

Members have a special offer, too! Bring up to six guests with you on your visit this weekend for December Member Guest Weekend.


Cost: Free for members / Included with admission

Recommended Ages: All ages

Buy Tickets

Members receive program and event discounts and free admission. Become a PacSci Member

The event is finished.


December 20, 2019


All Day


Pacific Science Center
200 Second Avenue North, Seattle, WA 98109