I read that tourists will no longer be allowed onto the ground floor of Hagia Sophia and the only areas they will be able to visit are the galleries on the upper floor. Among other things, this sounds like tourists won't be able to look up at the dome, which is a major reason for visiting. There's also an entry fee, but that seems reasonable. https://www.lonelyplanet.com/news/istanbul-hagia-sophia-entry-rules
Any information on what one can see?