My wife and I are traveling to Europe this fall to visit friends in Germany. Our travels will keep us in Austria and Germany, but we would like to make a brief stop on the Iberian peninsula on our way back to the US. We are booking our flights with airline miles and we can book a dedicated 24 hour layover in a city for free. We are trying to decide between Madrid, Barcelona, and Lisbon. Thoughts? Which one is best for a quick taste?
Also I feel I should note that ideally we would spend much more than 1 day in any of these cities but that won’t be possible on this trip. The 24 hours will have to do. It’ll give us a teaser for our next trip when we can spend more time.