Building activities can be used any time in the school year in mathematics classes to promote problem solving, perseverance, and to develop students' spatial thinking. Spatial visualization skills are the "ability to mentally manipulate, rotate, twist, or invert a pictorially presented stimulus object." The authors were guided by the notion that "students at all grade levels can benefit from the use of physical and virtual manipulative materials to provide visual models of a range of mathematical ideas" and that PK-12 programs "should enable all students to use visualization, spatial reasoning, and geometric modeling." In this article, the authors describe how they adapted the typical skyscraper puzzle activity to become an amazing task in which students not only solved but also created their own skyscraper puzzles.