The WSSSM opened on Snoqualmie Pass on October 10, 2015. The Summit at Snoqualmie is Washington’s most visited ski resort, the location is convenient to reach by the largest population center in the state and I-90 is one of the most heavily traveled east-west freeways in the United States.. WSSSM is housed between the Commonwealth Café and Dru Bru Tap Room & Brewery—both of which provide substantial number of walk-in museum visitors. WSSSM has 1,200 square feet of museum space plus 400 square feet of mezzanine.