Rosenberg Train Museum last weekend had some serious model train collectors running their collection. That is a model of the ‘Big Boy #4014’ steam engine. The largest steam engine ever built. They pulled cargo over the continental divided during WWII. Recently totally refurbed and travelled around the country. I missed seeing it. But there is another i have visited in Frisco, TX that is on permanent display. The wheels are huge. Would have loved to see that machine running.