The build is the Hagia Sophia as it originally appeared in Constantinople, it does not have the minarets or additional buttresses which were added later. It was built in 537 A.D. by Emperor Justinian I and still stands in modern day Istanbul. There are only a few Hagia Sophia builds out there and as far as I know, this is by far the largest version ever built, standing 115 blocks tall with a footprint of 186x136. Also, most of the builds out there are not available to the public to download, THIS ONE IS! Enjoy.