The Portabello Estate

This $75 million estate in Corona del Mar, California was recently sold. The oceanfront estate is designed to resemble a nautilus shell, with a large open area at the center and chambers, including eight bedrooms, spanning outward. The home includes a two-story grotto with a pool, two spas, swim-up bar, tunnel slide, poolside lounge room and barbecue area. The entertainment level has a bowling alley, Art Deco theater, automotive museum, cafe and a gym. At approximately 2,000 square feet, the two-bedroom master suite alone is larger than some houses.