The lobby of the Joule Hotel is a dark cavern that stretches far into the building. It's full of mesmerizing artwork by Andy Warhol and a rotating installation on the ceiling. Pay it no mind. Make your way to the row of elevators on the right. Get off at the 10th floor and push open the exit door to discover a breathtaking contrast between old and new Dallas. The pool deck is a modern marvel of luxury divans and cooling lavender mist. Drinks like the tangerine mojito, cucumber sage margarita and watermelon sangria go for $10. But all around you are the middles and tops of the famous buildings of Dallas' skyline. Some are vacant, but most are restored like this building's 1920s Neo-Gothic façade. The pool is public (for now).