Exhibits & Programs

Parents’ Night Out

Spend a night out (or in!) while your child enjoys private, after-hours exploration of our exhibits, hands-on activities, and a live science, planetarium or laser light show. Your child will enjoy a light snack upon arrival and a science-themed treat later in the evening. Participants will be supervised in age groups by our outstanding and experienced staff all evening.


  • Drop-Off: 5:30-6:30 p.m.
  • Pick-Up: 10-11 p.m.
  • Cost: $45, or $35 for Members

Transfers & Cancellations: There is a $10 fee per child for transfers to another date. There are no refunds.

For all events beginning in October 2016, participants must register for a new account and complete a new medical form to ensure that our records are up to date. You only have to fill out this form once per child per year. For future Parent’s Night Out events, select the “Already Registered?” link on the registration page and enter the confirmation number from your last registration confirmation email.

January 21: Art of the Snowflake
Does your scientific mind inquire about the uniqueness of each snowflake? Do you dream of playing in the snow and on the ice? Design your own experiment to melt an icicle, then create your own ice sculpture. Cut away at a snowflake to take home and hang in your window. Get chilly with our Cold science show and finish your night with our signature frozen treat!

February 11: Technicolor
Do blue and yellow always make green? Come spend the evening experimenting with colors all around you. Observe the differences between colored light and colored paint and make your own rainbow to take home. Be dazzled by colors in a Laser Show, and enjoy a tie-dyed frozen treat. It will be a colorful evening!

March 25: Muscle Madness
Fool your muscles and test your reflexes as we dive into the human body to discover how our muscles create force and produce motion. What is muscle memory and how does it affect old age? How does adrenaline affect your ability to keep moving? Create your own model muscle, watch a stunning show in the Planetarium and snack on a tasty frozen treat all while moving your muscles!

January 30: School’s Out  at Mercer Slough

When school is out for kids in Bellevue and Seattle school districts, Mercer Slough has you covered! We will spend the day exploring environmental science on your child’s day off from school.

Animals Inside-Out
Animals are more than the sum of their parts. Spend the day building an animal from the inside out as you explore what is the same and what is different about all kinds of animals. Build a strong skeletal system, compare your senses to other animals, and experiment with how animals stay warm in the winter. Use everything you know about the insides of animals to make up the coolest animal ever!


  • 8 a.m. – 4 p.m.
  • $85, or $75 for Members