If you attend enough outdoor concerts, it’s just a matter of time before weather conditions wipe one out. Unless, Ark Nova is used at the concerts your attending. Ark Nova is an inflatable concert hall. The current version has a capacity of 700, but there may be plans to increase the size.
Ark Nova entered the music scene in Japan in 2011, as a consequence of a need to house fundraising concerts for victims of the tsunami. It is an inflatable structure that is dimensioned to create a protected area in which a seating arrangement resides. Thus far, the only colors are red and plum.