Design-Build-Play! With Power Construction City now you can build anything your imagination desires. Whether you are building a tall skyscraper or a long drawbridge, Power Construction City structures allow you to create fun play environments to play with your other toys. It"s fun and easy to do! Mix and match Power Construction City Toys with Power Trains to make your very own Power Train City. With over 165 Pieces, the Expansion Pack allows you to build even higher!