The true engineering marvels are grand and stand the test of time, and this set offers a hands-on approach to learning about them. A hardcover with images of remarkable structures and vehicles is accompanied by an activity book containing stickers, games, and fun facts, while a 34 x 24-inch poster compares the tallest buildings. Better yet, this set includes materials and instructions to make two freestanding cardboard models—with parental assistance, children 9 and up can build a 14-inch Eiffel Tower, and an impressive 26-inch Burj Khalifa.