Aon Center

Aon Center
  1. About the Aon Center in Los Angeles
  2. Architect and team
  3. Architectureal style
  4. Spaces and uses
  5. Structure and materials

The Aon Center is an International Style skyscraper designed by Charles Luckman and built between 1970 and 1973 in Los Angeles, CA.

Aon Center is not the only name you might know this building by though. It is common for companies to want to attach their names to iconic buildings when they move in, or for the general public to come up with nicknames, and this one is no exception. The building has changed names several times over the years, and is also known as:

  • United California Bank between 1973 and 1981.
  • First Interstate Tower until 1981.
  • First Interstate Bank until 1984.

Its precise street address is 707 Wilshire Blvd, Los Angeles, CA. You can also find it on the map here.

The building has two parking areas: one underground within the same building, and another located a few meters away connected to the building by a tunnel accessible to both vehicles and pedestrians, providing a total of 1028 parking spaces.

In 1988, while a springler system was being installed din the building, a fire started on the 12th floor. Security personnel ignored the alarms for 6 minutes, believing they must have been triggered by the installation works.

The building underwent a major restoration in 1992.

Building's timeline

Construction begins
United California Bank
years ago
  1. 1992 - General repairs to the curtain wall facade mechanical systems were made.

Architect and team

Charles Luckman was the architecture firm in charge of the architectural design.

Charles Luckman was in charge of the architectural design, however, architecture is a complex discipline, which usually involves many professionals from different fields, without whom this building would have not been possible. We will surely be leaving out a lot of names here, but here is a list of the people we do know also played their part in making the Aon Center a reality:

  • Erkel Greenfield Associates in charge of Structural Engineering
  • CL Peck Contractor as the Main Contractor

Architectural Style

The Aon Center can be categorized as an International Style building.

The international style originated in Europe in the early 20th century, and made its way to the US a couple of decades later when the rise of the Nazi regime forced figures such as Walter Gropius, Marcel Breuer, or Mies van der Rohe to flee Europe.

The International Style emerged as a response to the prevailing historicism and ornate architecture styles of the late 19th century, which according to a younger generation of architects didn't represent the new materials and construction techniques that were on the rise at the time.

Architecture in the early 20th century US was marked by the adoption of steel structures, modern construction techniques, and the rise of the skyscraper. As it turns out, this combination of circumstances created the perfect ecosystem for the International Style to flourish, becoming the to-go style for skyscraper designs during the mid-20th century, when American cities were growing fast.

The International Style’s legacy can not only be found in numerous iconic buildings across all major American cities, but also incorporated in contemporary architecture, which still puts a big emphasis on functionality and minimalism.

Spaces & Uses

The Aon Center reaches an architectural height of 858ft (261.5m). It has a total of 67 floors, 62 above ground and 5 basements, served by 30 elevators.

In regards to parking space, the building has a total of 1028 spots available, which roughly equals 17 spots per floor (above ground).

Ever since opening its doors to the public in 1973, the Aon Center has mainly been used as Commercial space.

858ft (261.5m)
5 basements

Materials & Structure

The Aon Center uses a frame structure made of steel columns and concrete slabs.

A frame structure uses a combination of beams and columns to sustain the building's weight. The walls in this case are non-load bearing, which allows for more flexibility when distributing the interior spaces.

The facade is non-load bearing either, as it is common in frame structure type buildings.

From an aesthetic point of view, the facade features an aluminum-framed curtain wall with tinted bronze glass that, as it approaches the four corners, changes to aluminum panels framing the whole structure. The name of the building is displayed on this aluminum frame at the top of the building.

The building is topped with a helicopter landing pad.