121 Atlantic Place, Historic skyscraper in downtown Jacksonville, United States

121 Atlantic Place is a ten-story steel-frame building at 121 West Forsyth Street, 135 feet (41 m) tall. Its lower two floors are clad in white Sylacauga marble, while the upper eight are covered in white terra cotta. The facade has ornate detailing and two-story columns around the entrance.

Designed by New York architects Mowbray and Uffinger and built by the James Stewart Company, the Atlantic National Bank Building broke ground in August 1908. It opened in 1909 as headquarters for the Atlantic National Bank, founded in 1903 by Edward W. Lane, Thomas P. Denham and Fred W. Hoyt. At 41 metres it was the tallest building in Florida until the Florida Life Building was completed in 1912.

The building displays classical design features from the early 1900s with two-story entrance columns that catch the eye immediately upon arrival. This style merges traditional architectural elements with the practical demands of office work from that era.

The building houses modern office spaces and features an underground pedestrian tunnel connecting to the nearby BB&T Bank Building. This passage makes it easy to visit multiple buildings without stepping outside.

The upper eight floors feature white terra cotta cladding, representing one of Florida's early uses of this material in commercial architecture of that period. This material choice was novel at the time and helped the building stand out in the developing skyline.