Castle options

[Pbl427]

My kids received two small playmobil sets with a princess and knights. I would love to get a castle that they can use these figures with. I know there is a playmobil option, but I am wondering if there are other options that would work as well.

TIA!

[KrystalS]

There is an Imaginext castle. We don't have one but DS played with it at Target & loved it.