You'll probably be heading here anyway but this is more than your normal tourist info centre, as shown in this picture. There is an informative display with theaterette, memorabilia, information and a ship as well!
The replica of the Lady Nelson is of historical significance being a copy of a small 60 ton brig built for exploration purposes in 1799.
Some claim she was probably the most important vessel in Australia's early history, being, it is said, the first to sail along the entire southern coastline and make an eastward passage through the notorious Bass Straight.
For 24 years she went and charted places like King Island, Westernport Bay (Melbourne), Northern Australia and Tasmania. She also carried grain and coal between my home town (Newcastle) and Tasmania.
Returning from Melville Island in 1825, she called at the island of Baba where her crew were killed by natives and the ship run ashore and burnt.
There's also the usual comprehensive amount of literature enticing you to tarry longer than you had already planned.
The Englebrecht cave right on the main Jubilee highway inside the Mt Gambier township is a nice cave to see (cave divers use the under water part of it) or you can also drive to Nelson (approx 20 minutes away) and see the really nice Princess Margaret Rose Caves (these are said to be the best in the region) Each cave is different and I found them all great.
The Tantanoola cave, another nice one, is also quite close to Mt Gambier.
This is an interesting and informative tour about the Blue Lake. At the conclusion, an elevator will take you from the rim of the crater right down to the water's surface. This is the only way you can actually see the water from the water level - and it's just as blue down here as from far above at street level.
Also a sinkhole, which has been converted into a garden just off the main street. I believe it's lit up at night.
If you look closely around the rim of the volcanic crater, at the very surface edge of the blue lake, the water appears quite clear and green.
Go to the Valley Lake Wildlife Park where you can see our beautiful native fauna. Kangaroos, ducks, geece, emu and koalas if you are lucky! Does not cost anything.
The Mt Gambier region is one rich in caves and craters.
The Umpherston Cave is an open cave, filled with beautiful gardens, on the outskirts of town.