If Post Oak Boulevard continued to run straight north, it would go right through Four Oaks Place. Fortunately for superstar architectural firm Cesar Pelli & Associates, the street turns, giving drivers the ability to see the three main buildings of the Four Oaks Place complex in context. As the left building, the BHP Tower stands 25 stories tall. All three are covered in reflective blue and silver glass, allowing them to assume new identities with the changing weather.