100 North Main currently stands as the tallest building in Memphis, Tennessee. At 430 feet, (131m) it serves as 37 floors of office space. The building currently stands bordering Adams Street, North Second Street, and North Main.
100 North Main is an almost identical, taller version of the 633 Building in downtown Milwaukee, Wisconsin.
Due to its proximity to various municipal buildings, 100 North Main's tenant base has consisted primarily of attorneys, title companies, and various other professionals involved with government business and the courts.
In 2006, it was priced for sale at $20 million. Due to limited demand for commercial office space in downtown Memphis, much office space began to decline in value. At , of which only 50% is currently occupied, 100 North Main would sell for approximately $46 per square foot.
The building was constructed with a revolving restaurant atop the main roof. This restaurant operated under several different owners and names (Top of the 100 Club, Pinnacle, etc.), but is currently vacant. Behind the restaurant was a Japanese garden which closed in 1971. A few large stones and a concrete path are all that remain of the garden today.
The base of the tower is a multilevel parking garage. Some retail space is also accessible from street-level entrances.
In their 1986 book Memphis: An Architectural Guide, authors Eugene J. Johnson and Robert D. Russell, Jr. called 100 North Main "one of the least interesting" downtown structures.