Expedia is your one-stop shop for planning your entire holiday. Find the perfect car rental to explore Yokoyama Observatory, then add your airfares and hotel to land an awesome deal. Many car rental outlets include free cancellation, so there's no need to stress if your plans suddenly change. Don't forget to join our free travel rewards programme, One Key™, to earn OneKeyCash™* on your car rental and other bookings. This can help you save on your next awesome adventure, whether that's a city getaway or a multi-state road trip! *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.