Most people are familiar with the primary futures exchanges, such as the CBOT, CME, and the NYMEX (all part of the CME Group). However, there are some more specialized (and interesting) exchanges. For example, check out Intrade, which is a futures market based on political outcomes. Also, you can invest based on Hollywood movies ().
Dolvin, Steven D., "Futures Exchanges" (2012). All Chapters. 42.