Anyway, I think Europe is worth a visit - any time. In April my wife and I visited Barcelona (driveby). We did not just enjoy the indeed reduced prices, thanks to the cheap Euro (especially the solid Spanish food & wine comes much cheaper than in New York). We also indulged into the beauty of this mediterean city and its culture. Barcelona is really recommended.
And Europe (meaning the European currency area) has much more to offer, not just famous places like Berlin, Paris, Rome & the Toscana. Btw. you will never get there as young as today. Enjoy!