If you are into historical stuff, the Melbourne area has the Puffing Billy Railway, which is one of the best old-timey steam railways in Australia. There is also Luna Park, which is a small old-timey amusement park. On the surface it doesn't look like much, but when you examine the historical nature of the place, it's God-tier. It was built over 100 years ago during the Coney Island era of amusement parks and is largely intact and unchanged from that time. Definitely check out their main roller coaster and their carousel. Both are super legit, as well.