The Jefferson Davis Monument State Historic Site is a Kentucky State Park preserving the birthplace of Jefferson Davis, the president of the Confederate States of America. It is located in Fairview, Kentucky. The focal point of the site is a 351-foot (107.0 m) tall concrete obelisk.
The monument is the tallest unreinforced concrete structure in the world. No steel was used to reinforce the concrete. As one pour was completed, large chunks of limestone were left projecting up to connect it to the next pour above.
The monument is the tallest concrete obelisk in the world. (All of the taller obelisks are constructed with blocks of stone.)
[Source: Wikipedia]
