Get an exclusive look inside receivers and marvel at the precise engineering required to collect the Universe’s faintest signals. A Green Bank Observatory engineer will pull back the curtain on the Observatory’s site labs and control room as you see what makes Green Bank Observatory one of the world’s leading radio facilities. Federal regulations require pre-screening attendees age 18 and up. For more on our screening policy, click the website below. High Tech Tours are offered on select Thursdays; 3:30-4:30 p.m.; $15/person; 15 participants max.; No photography of any kind permitted. Reservations and screening required 48 hours in advance.