Designed by English architect Norman Foster for the 1992 Olympic games, this 288m-high communications tower on top of Collserola hill opened to the public in 1998 and offers magnificent views of the city. On a clear day, you can see as far as Mallorca. The funicular railway takes you its entrance. Closed: Dec 25 & 31, Jan 1 & 6. Transport: Take the FGC to the funicular, the funicular to Vallvidrera Superior and then bus no. 211.