It's probably not as impressive as Miniaturwunderland, but if you're in the US, and specifically near northern New Jersey, there's a neat place called Northlandz [1]. It's much older than Miniaturwunderland and I'm sure it doesn't have the level of computer control. But it's huge. Even going as an adult, I was still surprised at how large the display room was. It's been maybe 6 years since I last visited.
There was another, much smaller one that was closer to home - Roadside America [2] - but it sadly closed permanently during the pandemic. I remember going there several times as a child and really enjoying every trip.