Sant Miquel del Fai is a great day hike outside of Barcelona that is not touristy. Nice easy hike with beautiful views of the waterfall and monastery. We went there with Terra Diversions for a price of 74 Euros each: http://www.terradiversions.com/eng/StMiquelHikeTour.asp. Well worth the cost, which includes lunch. Ask for Albert, he was an amazing guide.