Tradeshows & Expos Throughout the Arena there a number of large open spaces that lend themselves to exhibitions and trade shows. at 127m long and 38m wide the floor of The Trusts Arena is Aucklands largest open span floor without pillars. The Arena floor is over 4800 square metres, with no pillars and easily accessible from the large loading docks at the side of the building. Beyond this, the Genesis Energy Function Lounge holds an additional 600sqm of exhibition space. With all the facilities of a large scale multi-purpose venue, the Arena provides the perfect opportunity to take your event to a new level.