Here's the "big" accessory for this new line of trains based on the show Chuggington. The roundhouse  can either be used stacked to provide an unusual two-story structure. It comes with a elevated turntable
in order to get the trains up and down from the second story (pretty cool). Or you can take the two halves of the roundhouse and use them to create a circle around your track. What we really love is that you can ascending pieces to add trains to the second story. There's something very cool about building height in train settings. Our tester did note that it seems more "plastic" than Thomas--but the amazing functionality of this prop outweighed all of those esthetic concerns. 

Age: Preschool, Early School Years. Award Year: 2011. Click here to purchase the product on Amazon.com.