Pennzoil Place was proclaimed as the the Building of the Decade in 1975 by the well-known New York Times architecture critic Ada Louise Huxtable because of its spectacular stature. Two 36-story trapezoidal towers are what make the Pennzoil Place very distinguishable. The trapezoidal towers are made of dark bronze-tinted glass connected by a 115foot high, glass-enclosed courtyard.

The concept behind the building is absolutely clear. The towers are unbroken, neutral masses covered in tinted glass and aluminium curtain wall. While the interior contrasts with the white painted steel. It?s simply a remarkable sight inside, and out.

Why Pennzoil Place is considered as an architectural breakthrough shouldn?t be a question. When it entered the postmodernism era together with other designs, it broke the modernist glass box principle popularized by followers of Ludwig Mies van der Rohe.