Woke up after midnight to get to our 4 AM flight, which was eventless. Landing in Frankfurt, we realized train prices soared, and we headed to Cologne for a super early 10:30 check in and a triple room upgrade. After some lounging, we started exploring the city - the amazing cathedral, the amazing Ludwig museum and the Farina fragrance interactive experience. We returned to the hotel for dinner and were too dead tired to go out again.