<p class="MsoNormal">Much like birds, the world's top 1% also flock together. Globally, an affluent area where the ultra-wealthy buy property is often labeled "Billionaires' Row." The area typically refers to a collection of mansions or high-rises that are also among the most expensive real estate in the world. Here are some of the ultra-wealthy people who have disclosed their luxury property buys on New York City's Billionaires' Row. </p><p class="MsoNormal"></p>