completed high-rises, 32 of which stand taller than 400 feet (122 m). The majority of the city's skyscrapers and high-rises are clustered in the Financial District and Back Bay neighborhoods. List of tallest buildings in Los Angeles - Wikipedia Website Templates Web Templates - Template Monster The tallest structure in Boston is the 60-story 200 Clarendon, better known to locals as the John. The tallest building in Los Angeles is the Wilshire Grand Center, which became the tallest building in is also the tallest building in the state of California. The Wilshire Grand Center also stands as the tallest building west of the Mississippi River, and the 9th-tallest building in the United States. Seven of the ten tallest buildings in California are located in Los Angeles. Kart Flyfoto Kart Flyfoto Hybrid.