Oakbrook Terrace Tower

The building displays several of architect Helmut Jahn's tradmarks including horizontal stripes, and a blue glass façade like some of his east coast skyscrapers.

Like several other Jahn buildings, even the sidewalks were designed by him.

The tower is octagonal with four chevron gables at the top and chevron arches over the 2 main entrances.

Each of the top 4 floors has 16 corner offices.

Tallest building in Illinois outside Chicago.

The five-story lobby is clad in white Statuario Venato and gray Moncervetto marbles. It features a stainless steel sculpture by Nancy Graves titled Peripeteia '88.

After its completion, opponents of the tower spread a false rumor that it was leaning. The rumor made it into the Chicago Tribune before it was discredited.

The glass spandrels are patterned with a silvery sheen which gives them the appearance of aluminum.

The design features chevrons not only in the gables and entrances, but in the lobby walls, elevator doors, and the tiles of the health club's swimming pool.

The main entrance is aligned with a long tree-lined driveway coming off of Spring Road from the east.