Riverplace Tower, Mid-century modern skyscraper in Jacksonville, United States.
Riverplace Tower is a mid-century modern skyscraper with 28 floors located on Jacksonville's riverfront. Its exterior features distinctive precast concrete beams that spiral outward, creating a sculptural appearance that sets it apart from conventional office buildings.
The building was completed in 1967 and was then the world's tallest structure using post-tensioned concrete technology. This engineering breakthrough made it notable during an era of rapid experimentation with new building methods.
The building's bold concrete form has made it a local landmark where office workers pass through daily, and the riverside location draws people to the plaza below for lunch breaks and informal gatherings.
The building has multiple elevators for access throughout its 28 floors and opens onto a riverside plaza where visitors can walk around freely. The location is easy to reach on foot from downtown, and the outdoor space around it provides good views of the river.
The concrete elements taper upward and angle outward in a way that creates an unusual pattern unlike typical rectangular towers. This distinctive design was an experimental approach when it was completed, and few other buildings of that era attempted something similar.
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