If you're in need of a little self-care, head straight to Neptunbad for a treatment. You'll feel so peaceful and relaxed you'll just about float out of there!
This Ehrenfeld place of rest and relaxation is a good place to start your day of sightseeing. There's lots to enjoy in the vicinity, such as Cologne Cathedral, RheinEnergieStadion, and Old Market. Take your time at Neptunbad before hitting up these other fine sights.