“Manhattan’s West Side Highway is lined by a gleaming wall of glass and metal. The skyscrapers along this stretch tend to be tall and boxy—aside from one conspicuous exception. Forty Tenth Avenue, a 12-story building from Chicago architecture firm Studio Gang, cuts a jagged silhouette against an otherwise rectilinear skyline. The southeastern side of the building tapers back from the eighth floor toward the roof and narrow base, creating an hourglass-shaped carve in the facade.”