OMSI After Dark: PROMSI

When

Friday, May 15, 2026

6 p.m.

Where

Various Locations

Portland, OR

OMSI After Dark: PROMSI is the museum’s annual take on prom, done the After Dark way with vendors, lectures, and science demos. Usually held in February, this year they’ve decided to bring you the ice and cold in spirit only, with an Edwardian Arctic cruise theme held in May. So call up your haberdasher and ask for the biggest feather they have, as it’s time to dance the night away.

Unfamiliar with the event? OMSI After Dark is for guests 21 and over, where you can have a drink and wander the exhibits after hours. Interact with hands-on science experiments, live performances, local educational groups, lectures, food and beverage samplers, and more. Each event has a different theme, which means a new set of people and entertainment to engage with each month!