I've never visited a mosque outside of video games. I do love old architecture, though, and I would love to visit an old mosque someday. I also want to visit more old churches, even though I'm no longer a religious person.
Never seen one in real life but they look very nice
Well this one is located in Constantinople and looks like a church, most Turkish mosques look like churches. Persian style mosques are very exotic and beautiful as well:
Legend Haghia Sophia is now a museum but it's mostly known as a Church, she is the most beautiful church of all time though:
It is such a shame it was violently turned into a mosque. Just imagine all the golden mosaics and the other beautiful art that was there prior to 1453 .
Thank God Ataturk turned it into a museum and the surviving pieces of Art could resurface.
Suleymaniye Camii in Istanbul. I went there this year in April, late in the afternoon and it was just magic. There was NO ONE in the yard and the lights were wonderful.