bench, as well as architectural features such as a stone carpet and living wall, created by New Zealand sculptors and designers. The building also contains several Jerry Andrus illusions including Crazy Nuts (an impossible nuts and bolts interactive illusion) and The Magic Square logic puzzle. There is also an area devoted to exhibitions, the first dedicated to advertisements and familiar products which plays with how the viewer sees recognisable company logos. and more recently, "Un-usless" - A large display of impossible or useless inventions and creations by local sculptors and international artists aimed to amuse, confuse and amaze. Other features include stained glass windows with geometrical patterns and an area for conferences and events. The Leaning Tower of Wanaka The Leaning Tower of Wanaka is, as the name implies, a tower that is seemingly impossibly balanced on one corner, making the whole structure lean at an angle of 53 degrees to the ground. Optical illusion rooms The Illusion Rooms include a set of rooms designed to absorb the visitor within its particular optical illusory theme. Aside from "The Sculpillusion Gallery" it contains The "Hologram Hall", a large range of holographic images, both traditional and new. The "Tilted House", built at a 15 degree angle, contains illusions such as water apparently flowing uphill, the octagonal "Hall of Following Faces" with back-lit hollow mask illusions on the walls, created by artist and sculptor Derek Ball, and an Ames Room, a perspectively confusing room with a delayed video feed where visitors can see themselves afterwards with seemingly different heights depending on where they were positioned. 3D maze Puzzling World features a large maze in which the traveller must reach four coloured corner towers before finding the middle courtyard (emergency doors are included for those who struggle). Psychic challenge The operators of Puzzling World have for many years offered a monetary prize for anybody who can prove they have psychic powers; potential winners need to use their powers to locate a specific item located somewhere on the Puzzling World site. When the challenge began the prize was originally $50,000 NZD, for which any participant was required to find two halves of a promissory note which had been hidden within of the building. This was then reduced to a radius of , and finally in 2006, when the prize was doubled to $100,000 NZD, . Any 'psychic' participant is required to pay $1000 to take