One Wilshire

One Wilshire is an office building located at the junction of Wilshire Boulevard and South Grand Avenue in downtown Los Angeles, California, United States. Located at the eastern end of Wilshire, its address is 624 S. Grand Avenue. Built in 1966, the thirty-story high-rise was designed by Skidmore, Owings and Merrill, and for its first decades in existence, it was used almost exclusively by law firms. In the early 1990s, it began housing largely telecommunications companies, and in 1992, One Wilshire underwent a major renovation, with the improvements largely related to telecommunication network upgrades. Around this time, a large meet-me room was constructed on the fourth floor, and in 2008, Wired claimed that One Wilshire had "the world's most densely populated Meet-Me room," with around 260 ISPs with interconnected networks.

In 2001, the Carlyle Group bought the building for $119 million, and Hines Real Estate Investment Trust in Houston, Texas, paid $287 million for One Wilshire in 2007. It was sold in 2013 from Hines Real Estate Investment Trust to GI Partners for $437.5 million, the highest price ever paid for an office building in downtown Los Angeles. As of 2013, it was one of the top three telecommunications centers in the world, and by 2015 One Wilshire was "the most highly connected Internet point in the western U.S.," with submarine communications cables allowing "one-third of Internet traffic from the U.S. to Asia [to pass] through the building."