Bill Hook Nook Lecture Theatre.

 

[The soon to be registered outdoor lecture theatre in University of Kent was designed and built by a yet unofficial group of architecture students namely SHED (Studio of Hands-on Experimental Design). // Being located in the Parkwood forest, the scheme was to not go very far from the order of nature. // Its gateway, access, stage backdrop, and the 200kgs floating structure above the log seating auditorium, were all designed to be distinctive from its context--yet most materials used originates from the forest itself.]
http://blogs.kent.ac.uk/ksa/2015/06/11/billhook-nook-theatre-by-shed/