For most of us commoners, visiting a castle is the closest we'll ever get to living like a king or queen (and maybe that's a good thing -- it's hard enough to keep an ordinary house clean, much less a palace with hundreds of rooms!). If you're looking to tour a royal residence on your next trip, check out our list of the world's top 10 coolest castles. Some have great historical significance, like the citadel in Syria that played a crucial role in the Crusades, while others made our list for their amazing architecture or over-the-top opulence. Start the slideshow to see our picks for the world's best castles.

Did we forget your favorite? Share your must-visit castles on our message boards.