MCI Center vs Aon Center

Comparing the MCI Center and the Aon Center is interesting because they both stand in Los Angeles, CA, and were completed in the same year, but they were designed by different architects.

This offers a unique glimpse at how rival designers approached projects in the same city during the same era.

The Aon Center is clearly the larger tower of the two, both in terms of height and number of floors. It rises to 858ft (261.5m) with 62 floors above ground, while the MCI Center reaches 413ft (126m) with 31 floors above ground.

Of course, each project may have faced different briefs or regulatory constraints, which we don't really know about and could also explain the outcome.

Both the MCI Center and the Aon Center were designed in line with the aesthetic conventions of the International Style style.

Both buildings were completed when the International Style style was already past its peak. This makes them feel like late echoes of the movement, more reflective of continuity or nostalgia than of cutting-edge design at the time.

Both the MCI Center and the Aon Center were designed to serve as commercial towers, and that has remained their main use since their completion, serving similar roles in the urban fabric.

The Aon Center also provides 1028 parking spaces.

Both the MCI Center and the Aon Center rely on a Frame structural system.

A frame structure uses a grid of columns and beams to carry the building's loads. This frees the walls from structural duties, allowing for flexible floor plans and larger windows.

They also employ the same type of facade, a Curtain Wall facade.

A curtain wall is a non-load-bearing facade hung from the structural frame. It is anchored to floor slabs and transfers only its own weight and wind loads, allowing for sleek, glassy exteriors.