This concept house is made for Tetris lovers.
Steel modular blocks comprise each room (think: the kitchen block and bathroom block) and they can be configured into a number of customized arrangements. Create a one-story ranch house or stack the blocks on top of one another for a three-story retreat. If you want to reconfigure, just hire a crane to move things around. Bonus points: all the blocks have floor-to-ceiling windows, so there’s always abundant natural light.