We've all fantasized about a month-long trip to Europe -- but the time to fulfill this dream is not always easy to come by. Fortunately, a ton of time isn't necessarily required if you want to explore the other side of the pond. With just a few days, you can visit numerous areas of the continent and hit up top destinations, and there are a few attractions you just can't miss. We've picked one in each of Europe's most popular cities, and paired it with a nearby hotel so you can get the most out of your flash trip. These nine sights are all must-sees -- don't miss out!
-- Carolina Pirola, Oyster.com