Belvedere is fantastic! It's quiet and peaceful, and incredibly scenic. There is no better way to spend a few hours than walking along the lake shore, strolling through the woods, and looking at some of the weird and wonderful creations. The walled garden and fairy gardens are as tranquil as you can get, with the house and other buildings bring you back to a bygone era. If travelling to Mullingar, it's well worth a trip!!
I would have given it five stars only for the café in the place, which unfortunately one has no option but to walk through in order to get to the park. It is called CaToCa and it is horrendous! Between it's the useless staff or the filthy state they have the place, avoid it! When visiting the gardens and if you fancy a tea or cake afterwards, take a spin up to the nearby Bloomfield House Hotel.