Still at the Musée d’Orsay, we saw that the sky got darker and darker and then started to rain heavily. Unfortunatelly the museum was closing at some point and we didn't have a new destination in mind. So we just walked towards the center of the city and shopped a bit until the rain stopped and then went to Galerie Lafayette, which is more a sight than a real mall, at least for us not-millionaires.
With the Arc de Triomph and Eiffeltower in mind, we then strolled along the Champs-Élysées, bought some snacks, took some photos at the triumphal arch and took a subway line to a station near the Eiffeltower. And in the dark it is always a spectacular place to be, when the tower starts sparkling every full hour. And luckily we bought a bottle of wine in advance to raise our glasses to our Paris trip.