Barcelona is WONDERFUL city(I'm not from it,but it fascinated me a lot) and there are a lot of to do! At first,you must to see Barcelona's symbol - Sagrada Familia(created by Gaudi),it's amazing building and one of the most beautiful church in the world.Also there are and other buildings by Gaudi,which are beautiful too! It's Casa Mila(others call it La Pedrera) and Casa Battlo.If you want to go for a walk,there are Park Guell,nice park have nice and orginal places,in this park is one of the longest or maybe the longest bench in the world.

Barcelona has a great panorama! If you want to make sure about it,you can go up to Columbus statue,visit Tibidabo amusement park(nice park),who is on the hill or go to Montjuic(near it are Magin fountains,who in summer works from Tuesday to Sunday 9pm – 11:30pm)

If you like football and are fan of FC Barcelona,visit Camp Nou.If you want to have a rest in beach,choose Barceloneta,Nova Icaria or Bogatell(they are the best in Barcelona).

Also there are La Rambla,most popular street,full of people,mimes,shops and thieves(be careful!)

It's the most popular sighseeings In Barcelona,but of course not all! I hope I helped you :)

p.s.Don't forget to taste paella(not a miracle,but delicious),it's like their traditional food

Have a look at http://www.timeout.com/barcelona/

I used to recommend places , then the prices went up as Time Out found them.

Yeah. Four days isn't close to enough! Try looking in a good guide book, Go.BCN.com, timeout Barcelona, etc. There is soooooooo much to do!

Invest in a good travel guide book to Barcelona and read it before you go.

Tisk. Is there anything to do in Barcelona. *snort*.

Have you tried tripadvisor.co.uk that is a great site to give you ideas about places and hotels check it out and have a great time

I have just booked 4 days in February (my birthday) it will be my daughter and myself - we both like to walk and sight see, have a nice meal and a cocktail or two. We are staying in the city centre (Grand central hotel). I have booked 2 days on the hop on hop off bus. Thanks for any advice. Jackie