The Hotel Bel-Air Spa may just prove once and for all that nature and nurture can coexist in equal measure. Set deep within the iconic hotel’s plush Bel-Air canyon setting, the spa evokes a tranquil indoor-outdoor vibe. The nurture quotient here is evident in the spa’s chic nail salon, his and hers locker and steam rooms, and the seven treatment rooms, including the couples-friendly private Enclave Suite. The prices are steep, but you can expect a world-class facial in one of the prettiest spa settings in all of Los Angeles.