Beverly Hills and the neighboring city of West Hollywood are together entirely surrounded by the city of Los Angeles. Specifically, Beverly Hills is bordered on the northwest by the Los Angeles neighborhood of Bel-Air and the Santa Monica Mountains, on the east by West Hollywood, the Carthay neighborhood of Los Angeles, and the Fairfax District of Los Angeles, and on the south by the Beverlywood neighborhood of Los Angeles. The area's "Platinum Triangle" is formed by the city of Beverly Hills and the Los Angeles neighborhoods of Bel Air and Holmby Hills.
In spite of the city's name, most residents live in the "flats" of Beverly Hills, which is a relatively flat land that includes all of Beverly Hills itself. The houses situated in the hillside north of Sunset Boulevard have a much higher value than the average housing price for the rest of the city.
Santa Monica Boulevard divides the "flats" into two areas, locally known as "North or South of the tracks," referring to the train tracks that were once used by the old Pacific Electric streetcar line that traversed Beverly Hills along Santa Monica Blvd. Houses south of Wilshire Boulevard have more urban square and rectangular lots, in general smaller than those to the north.
There are also more apartment buildings south of Wilshire Blvd. than anywhere else in Beverly Hills, and the average house value south of Wilshire is the lowest in Beverly Hills. Nearly all businesses and government offices in Beverly Hills are located south of Santa Monica Blvd., two notable exceptions being the Beverly Hills Hotel and the Beverly Hilton Hotel. Just outside the city limits to the west lies the Los Angeles Country Club. Other locations commonly associated with Beverly Hills include the Cedars-Sinai Medical Center and the Beverly Center, just outside the city limits to the east.
Source: Wikipedia