Three-night stay at the space hotel: $4.4 million

The Barcelona-based architects of The Galactic Suite Space Resort say it will cost $4.4 million for a three-night stay at the hotel, with this price including an eight-week training course on a tropical island.

During their stay, guests would see the sun rise 15 times a day and travel around the world every 80 minutes. They would wear Velcro suits so they can crawl around their pod rooms by sticking themselves to the walls like Spiderman.