Los Angeles City Hall, completed 1928, is the center of the government of the city of Los Angeles

Los Ángeles

Los Ángeles is the capital of the province of Biobío, in the commune of the same name, in Region VIII , in the center-south of Chile. It is located between the Laja and Biobío rivers. The population is 123,445 inhabitants...

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, and houses the mayor's office

Mayor of Los Angeles, California

The mayor of Los Angeles is the chief executive officer of the city. He is elected for a four-year term and limited to serving no more than two terms. Under the California Constitution, all judicial, school, county, and city offices, including those of chartered cities, are nonpartisan...

 and the meeting chambers and offices of the Los Angeles City Council

Los Angeles City Council

The Los Angeles City Council is the governing body of the City of Los Angeles.The Council is composed of fifteen members elected from single-member districts for four-year terms. The president of the council and the president pro tempore are chosen by the Council at the first regular meeting after...

. It is located in the Civic Center

Civic Center, Los Angeles, California

The Civic Center neighborhood of Los Angeles, California is the administrative core of the City of Los Angeles and a complex of city, state, and federal government offices, buildings, and courthouses.-Location:...

 district of downtown Los Angeles

Downtown Los Angeles

Downtown Los Angeles is the central business district of Los Angeles, California, United States, located close to the geographic center of the metropolitan area...

 in the city block bounded by Main

Main Street (Los Angeles)

Main Street is a major north-south thoroughfare in Los Angeles, California, and is the east-west postal divider for that city. It begins as a continuation of Valley Boulevard west of Mission Road in Lincoln Heights and ends at the Port of Los Angeles. At 9th Street, it merges with Spring Street in...

, Temple

Temple Street (Los Angeles)

Temple Street is a street in the City of Los Angeles, California. The street is an east-west thoroughfare that runs through Downtown Los Angeles parallel to the Hollywood Freeway between Virgil Avenue past Alameda Street to the banks of the Los Angeles River...

, First

1st Street (Los Angeles)

1st Street is an east-west thoroughfare in Los Angeles and East Los Angeles, California. It serves as a postal divider between north and south and is one of a few streets to run from West Los Angeles to East Los Angeles...

, and Spring streets.
The building was designed by John Parkinson

The Parkinsons

John B. and Donald D. Parkinson were a father-and-son architectural team operating in Los Angeles in the early 20th century.-Early years:...

, John C. Austin

John C. Austin

John Corneby Wilson Austin was an architect and civic leader who participated in the design of several landmark buildings in Southern California, including the Griffith Observatory, Los Angeles City Hall, and the Shrine Auditorium.- Life :Born in Bodicote, Oxfordshire, England, Austin was an...

, and Albert C. Martin, Sr.

Albert C. Martin, Sr.

Albert Carey Martin was an American architect and engineer.He founded the architectural firm of Albert C...

, and was completed in 1928. Dedication ceremonies were held on April 26, 1928. It has 32 floors and, at 454 feet (138.4 m) high, is the tallest base-isolated

Base isolation

Base isolation, also known as seismic base isolation or base isolation system, is one of the most popular means of protecting a structure against earthquake forces...

 structure in the world, having undergone a seismic retrofit

Seismic retrofit

Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes. With better understanding of seismic demand on structures and with our recent experiences with large earthquakes near urban centers,...

 that will allow the building to sustain minimal damage and remain functional after a magnitude 8.2 earthquake

Earthquake

An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time...

.