16. Arnold Schwarzenegger
topteny.com
This is a 21st-century castle. However, this is exactly the type of mansion that we would expect Arnold Schwarzenegger to live in. The mansion is located in Brentwood Country, California and it has everything you would ever need starting with a tennis court and ending with a movie theater. If you think Arnold Schwarzenegger’s house is extravagant, then you need to see what’s coming next!