There are few modern buildings more recognizable than the Sydney Opera House, with its shell rooftops, harbor views, and striking lines. The Lego Sydney Opera House ($320) does a remarkable job of recreating this 20th-Century architectural marvel in the form of a 11" by 25" by 15" model. Modular construction and new building techniques will keep you intrigued throughout the build. With nearly 3,000 bricks (including the largest blue-stud baseplate they've ever made and a wealth of dark tan bricks), this set is a worthwhile challenge for the most advanced lego builders. Available in September.