Combat the arid summer heat with a splash of refreshing spring water. Hyatt Regency North Dallas is one of the few hotels to offer an outdoor swimming haven in the heart of Richardson’s tech center. . This swimming oasis achieves an intimate, private atmosphere and from 8 a.m. to 10 p.m. all year long, treat yourself to quiet moments of reflection that are free from distractions, traffic noise or lifeguard whistles.