For anyone who has a hot tub at the top of their backyard ideas list, here's a trend you definitely want to check out: outdoor tubs. It's exactly what it sounds like—a bathtub in your backyard.

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Kiroro also boasts an outdoor hot tub, a sauna and a cold water bath that's perfect for soothing sore muscles after a day on the slopes. [See: 10 Romantic Getaways to Cross off Your Bucket List.] ...