Once called the Southern California Edison Building, One Bunker Hill was designed with the influence of Art Deco, a style that was highly popular in the late 1920's and early 1930's. The term Art Deco was coined in 1968 by Bevis Hillier, a British historian, to describe an artistic style that was characterized by entwining past styles of ancient Mayan, Assyrian and Egyptian art works with the modern industrial age. The lobby also features over 25 different types of marble stones intricately inlaid square-within-a-diamond-within a square patterns.

Opened in 1931 One Bunker Hill was one of world's first all-electric building and first in the Western United States. Its lighting, air handling machinery, mail tubes, clocks, elevators and all equipment were designed to operate electrically. The building's steel skeleton was designed to incorporate the most advanced seismic calculations yet performed to enable it to withstand severe earthquakes. All of the earthquake bracing and special connections were both manually welded and riveted.

One Bunker Hill building as one of the oldest structure with its superior location, historical significance and distinguished architecture is the cornerstone of the prestigious Bunker Hill neighborhood of downtown Los Angeles.