AT&T Switching Center

The AT&T Switching Center is a 137-meter tall structure in Bunker Hill featuring a steel microwave tower and white tile cladding accented with black granite details. The 17-floor building was equipped with advanced telecommunications technology for processing communications across the region.

The building was constructed in 1961 under architects John and Donald Parkinson and became a landmark of modern telecommunications infrastructure. Its microwave tower briefly made it the tallest structure in downtown Los Angeles.

The lobby features a large mosaic mural by Anthony Heinsbergen that incorporates actual telephone equipment to illustrate the development of communication networks. Visitors can observe how past and current technologies are woven into this artistic display.

The structure is located in Bunker Hill and easily visible from the street, marked by corner windows with metal screens and decorative louvered elements. Visitors should be aware that this is an active telecommunications facility and public access may be restricted.

The building housed advanced surveillance technology whose true purpose remained hidden from public view for many years. This role made it a crucial but quietly operated hub within the national security infrastructure.

Location: California

Inception: 1961

Architects: The Parkinsons

Floors above the ground: 17

Height: 137 m

GPS coordinates: 34.05080,-118.25300

Latest update: December 8, 2025 19:42