An indoor pool might be the ultimate creature of comfort. It offers a private, resort-style experience to its residents and supreme hospitality to its guests, whatever the weather. The indoor pool comes in many styles: For the serious swimmer, a resistance pool or lap pool builds strength, stamina, and flexibility. For the rest of us, all-weather amenities—spas, waterfalls, even fireplaces—make it a perfect place to relax, reflect, or entertain. Herewith, Luxury Defined offers a dip in six enchanting natatoriums akin to those in the world’s great hotels. So, go ahead, jump in, and indulge yourself.