If you've been living in a cave for the last 30 years then there might be a small possibility that you've never heard of this place. Nevertheless, if you like rock music, rock memorabilia, huge, but pricey, servings of pub food like enormous burgers, barbecue and Tex-Mex from the States, not to mention canal side dining and drinking not far from the Rijksmuseum, then look no further than this huge chain of American bar/restaurants.  Naturally, you can also buy all kinds of Hard Rock souvenirs at its shop, which is often part and parcel of the experience.