The Kalyan Minaret in Bukhara, Uzbekistan is a standout landmark that's been around since 1127. It was built by the Qarakhanid ruler Mohammad Arslan Khan to call Muslims to prayer five times a day. This circular brick tower stands at 45.6 meters high and has a cool spiral staircase inside. Fun fact: Genghis Khan was so impressed by it that he spared it from destruction! Plus, it used to be known as the "Tower of Death" where criminals were thrown off the top. So, it's got some history and a bit of an edge to it!