What do you call the largest garden of a city of gardens and one of the three World Heritage Site garden and the only tropical one? It's big and it's beautiful. It's huge with so many things and photo ops, you need at least 2-3 hours to explore it.Entry to garden is free but entry fees of $5 applies to Orchid garden, which is the must visit part.If you have some spare time, walk around the garden and relax along the lake and watch children playing and running non stop.