The Illusions Exhibition has taken over the top floor of the building, with more than 20 interactive installations to test eyes, ears and minds of all ages.

"It's all about human perspective and how we look at things," said science centre acting director, Stuart Creal.

"It's how we see things in one way firstly, then with a different view, you can see something different."

Exhibits from 3D images to spinning vases, line drawings to a giant mechanical pencil that seems to bend as it moves, fill the top level of the science centre. The Illusions Exhibition has travelled across the country from the Scitech centre in Perth, who have loaned the pieces to Wollongong.

"The exhibition is about how we use our brains, and which parts are responsible for perception. It has a selection of exhibits that will get people to look at things in a slightly different way," Mr Creal said.

"Illusions have been around for hundreds of years, from the early mystics all the way to the modern magicians."

All the old favourites still remain at the science centre, and a whole range of special school holiday workshops and activities have been planned, from space and stars down to garden creatures. The science centre is open every day from 10am.

Monday July 7 – Galaxies, Stars & Meteorites

Tuesday July 8 – Dinosaurs & Fossils

Wednesday July 9 – Science Friction

Thursday July 10 – Worms & Creepy Critters

Friday July 11 – Kitchen Chemistry

Bookings needed.