Double Decker Avengers

This colossal MOC by OliveSeon is an impressive blend of actual LEGO sets and mad building skills. If you look closely you'll see modified versions of the Grand Emporium, Palace Theater, Pet Store and more. Plus of course the Helicarrier and a number of other vehicles. The Avengers Tower looks like it's build from no less than 10-12 official tower sets, this MOC was a serious investment.