Basically what "La Diada" will mean to you is that, as it is a bank holiday most shops will be shut (except souvenir shops and corner shops) and museums will close at lunchttime (2.30-3pm). It's Catalan national day but celebrates the defeat of the Catalans by the Bourbons in 1714, which led to Catalonia��s loss of independent identity within Spain. So no big celebrations, just an official party laying a wreath at the site of martyrdom. (which is quite near Picasso museum). The first Diada after Franco's death,in 1976, was the time when there were massive demonstrations revindicating Catalan rights but except for occasional incidents with (Catalan)Republican supporters all is quiet these days. This year the mood will probably be more sombre because it is the half-year anniversary of the Madrid bombings.

As to what to see in Barcelona....the "bus turistic" has two routes and gives you a good overview of the city with chance to hop on and off at sights. One-day ticket 16��� and for 2-day ticket (consecutive) 20��� which is a better deal and means you can take things a bit more calmly. Our family favourite place to take visitors is Parc G��ell. Various Gaud�� houses are visitable and fabulous. We also like (without visitors too!) the Ramblas, Pla��a del p��, the harbour and Maremagnum . Time Out is prob. the best guidebook with lots to read. Lots of conciser ones available in Britain.

If you want a day-trip out of the city, go to Sitges or Montserrat.

Finally...watch out for distractions which may be caused by pickpockets.

Have a good trip!