I visited a few weeks ago to attend a wedding. The plan was to see as much of the country as we could within the limited time frame of 10 days or so. My wife and I had 3 days booked in Tokyo so I thought it would be rude not to attend the legendary Mini Maruyama.
I will let the pictures do the talking.
It was about a 10-15 minute walk through the Japanese suburbs from the subway stop to Mini Marauyama which was pleasant in the good weather and nice to see another perspective of Japan away from the main Tokyo city centre.
Despite the place looking like a museum, it is a shop that is open to general public. My Marauyama was happy to let us have a look around and even took the time to show us his private cars.