Warning: Do not attempt to drive or bike down this winding, mile-long stretch unless you carry the maximum dental-insurance coverage. The opulent and luxurious multimillion-dollar estate homes on both sides of the road are sure to make your jaw drop. Many of the mansions are tucked behind lush vegetation and tall palm trees, but if you slow down enough (the speed limit is 35 mph anyway, and you'll fit right in), you can sometimes catch glimpses of the exotic and perfectly manicured gardens by peeking through the heavy metal gates and down the serpentine driveways. Architecture varies from the classic to the gaudy, and that makes the drive even more interesting. Among the oddballs are a medieval castle wannabe -- complete with tall, round turrets on each corner and gold-plated lions at the gate -- and a bright-white art deco mansion, with its walls and vestibules built in various geometric and pointy shapes. You can also catch a view of the sea here and there and breathe the fresh ocean air. If you're lucky, you might even spot Donald Trump or Oprah. Just don't forget to close your mouth if you do.