Great idea, Booklady. When I was in Madrid last Christmas for my friends' wedding others day tripped to Sevilla. We would have joined them, but I'd been there previously, and we chose Toledo (great place...the city of three cultures, as I call it...Christians, Jews and Muslims once coexisted) instead. It's my understanding same-day round trips on AVE have been sold in past at a discount (cater to business travelers), but I may be mistaken. It could have been another system that offered this deal. With the high speed rail it's realistic to do Sevilla in a day, if that's all the time you have. My friends left extremely early, had all day, and returned on the latest evening train. What a jet-set life we all live...