One Financial Plaza, Class A office tower in Fort Lauderdale, US

One Financial Plaza is a 374-foot-tall office building with 28 floors located in the Las Olas business district of Fort Lauderdale. The tower houses a fitness center, conference facilities, and dining venues for its office tenants.

Opened in 1972 as the Landmark Bank Building, named for its builder and main tenant, it was then the tallest building in the Fort Lauderdale area. Landmark Bank was acquired by C&S in 1985 and later became part of Bank of America. Union Planters moved in after 2002, and the sign changed to Regions following the 2004 merger.

The building's name changed with its main tenants: Landmark Bank, then Union Planters in 2003, and Regions after the 2004 merger. The current name, One Financial Plaza, reflects its office use rather than a bank brand.

The tower stands at 26.12167, -80.14000 in downtown Fort Lauderdale, a short walk from the Las Olas district. Its 28 floors are served by an office lobby; the upper floors and the club level are not open to the public. The post-2009 curtain wall is the storm-rated facade to look at from street level.

One Financial Plaza closely mirrors the Chase Tower in Amarillo, Texas: both went up around the same time, Chase Tower in 1971 and this tower a year later, and Chase Tower stands just a few floors taller at 31 stories. The resemblance is visible in the massing and facade of the two towers.