How a tradition that started off as a way to find a partner became a day for the industry to celebrate itself.

Marke Bieschke is the publisher and arts and culture editor of 48 Hills. He co-owns the Stud bar in SoMa. Reach him at marke (at) 48hills.org, follow @supermarke on Twitter.

You would be surprised at how many famous landmarks in Barcelona you can see in just a few days. As many people embark or ...