Theory Restaurant

Where every meal comes with a waterfront view

What’s Cooking?

From pizzas to salads to healthy snacks, Theory offers seasonal menus using local and organic ingredients. Check out our wide range of tasty bites for kids and adults alike.

May’s Menu Highlights

It finally feels like Spring and Theory is celebrating with some seasonal superfoods, such as cauliflower and avocados! Come in this month for some crispy tempura cauliflower bites or a Puebla avocado burger.  Gather with your families in our relaxing environment to enjoy a beautiful view and some delicious food. Hungry yet?


Dress up as your favorite Star Wars character and receive a free scoop of ice cream at Theory!


May 4th   11am – 3pm

Crispy Tempura Cauliflower Bites

Enjoy the health benefits of this season’s superfood – CAULIFLOWER! Come taste our crispy tempura cauliflower bites with sweet and spicy sriracha aioli!

Puebla Avocado Burger

Enjoy our burger special with this season’s superfood –  AVOCADO! Check out our Puebla Avocado Burger with charbroiled grass-fed beef, pepper jack cheese, caramelized onions, lettuce, tomato and fresh avocado on a rustic ciabatta roll.

Spring Hours

Sunday: 11 am to 3 pm
Monday: Closed unless the Museum is open for a school holiday
Tuesday – Friday: 11 am to 3 pm
Saturday: 11 am to 5 pm

Plan an event at Theory

With waterfront views of the Portland skyline, Theory is the perfect location for your next dinner or evening reception.

Need Lunch?

Field Trips

Pre-order lunch for your field trip group. Sit down and sack lunch offerings available.

Tasty and sustainable world-class fare provided by