When you are in Barcelona, you may be tempted to be satisfied to stand outside Gaudi's Casa Balto and admire it from the street, but you are missing a huge treat if you don't ante up the 12 to 15 euros to step inside and tour this whimsical home designed to have a look and feel of living in the sea. The audio tour (in about 10 languages) is included for the price of admission and adds depth and color to your tour. Don't miss going all the way to the top of the home for the rooftop patio to get a close inspection of Gaudi's mosaic sculptures. I have seen this structure in pictures and thought it was "interesting" but I was captivated and enchanted with experiencing it first hand. Photos do not capture the tickle in your belly at the whimsy of the fantasy created in architecture.