MIT’s first open house in more than 30 years provided hours of awestruck moments and became a highlight of the MIT150 celebration. Called "Under the Dome: Come Explore MIT," the open house attracted thousands who toured MIT's cutting-edge labs and research centers on April 30. The day's events featured Black Hawk helicopters, robotic demonstrations, blimp contests, and a wind tunnel with speeds as fast as 170 mph. Visitors were also entertained by student music groups and an exciting flash mob performance that started in Lobby 7 then poured into Massachusetts Avenue. This video includes highlights from the historic day-long open house that helped commemorate the Institute's 150th anniversary.