Somehow I can't quite agree with the positive reviews below. I do not deny the historic and architectural merits of the Silk Exchange, nor its WH value. It's quite an interesting building with some nice features (the columns in the main hall, the ceiling on the upper floor, the courtyard), and it certainly has its place in the history of business and economics. The problem is just that the organization and presentation are really terrible. The guided tours and the movie are only in Spanish (I do understand it reasonably well, but still, Valencia is full of international tourists, and the nearby cathedral, famous for its "Holy Grail", has audioguides and brochures in a whole bunch of languages) and there is nothing in the way of explaining what you can see (there are no signs or brochures whatsoever). So after walking around the building for about 15 minutes, there is nothing more to do and you have ticked off another WH site without having increased your knowledge of it at all. The upside is that the fee is only 2 Euros (as of 2012), and of course Valencia has a lot of other attractions, especially the impressive City of Arts and Sciences.