W Philadelphia

The pool

• Elevated WET deck
• Heated year-round
• City Hall + skyline
• Fire pits + cabanas
• Seasonal day passes

Why it's on the list

The WET deck is heated and open all 365 days, which in Philadelphia is close to a category of one. Skyscrapers and City Hall in the sight-line, fire pits at the edge, and weekend programming that tips it firmly toward scene — go midweek if you actually want to swim. Day passes come and go with the season.

The stay

The W is the scene — high-energy, design-forward, and the WET deck is heated all year, which in Philadelphia makes it nearly a category of one. It's in Center City near City Hall, walkable to the shopping and nightlife the hotel is clearly built around. At $$$$ you're paying for the brand, the buzz, and a pool you can use in February — go midweek if the swim is the point, because on weekends the deck belongs to the party.