Glasshouse Oasis Pool

An indoor atrium pool with a waterfall and hot tub, open year-round on the North Shore.

Why we picked itAn indoor atrium pool with a waterfall, open all winter on Long Island.

The heated, saltless 10-by-30-foot pool runs 3 to 8 feet deep under sunlit atrium windows, with tropical plants, a small waterfall and a hot tub next to it.

Towels, poolside speakers, pool toys and privacy blinds are included, and it holds up to 30 guests.