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The metropolitan transport system in Barcelona is very efficient. In the city there’s a big number of bus lines and a large underground network that covers almost all the city. There is also a modern tram system, and tickets are interchangeable. Prices are reasonable, and there are night buses for those who need to get around after hours.

For many years buying properties in Barcelona as an investment was beyond the posibilities of many foreign home buyers. Prices have been rising since 2001 and reached a peak last year. However, this year as a result of the global economical crisis as well as the local crisis in Spain, prices of properties in Barcelona started to go down and it seem much more likely to find a decent apartment for sale that what it used to be before.
Here are some examples of apartments for sale in  Barcelona that can be interesting for the foreign buyer:
75 m2 apartment for sale in the old city of Barcelona (Guardia street), in an old building, 3rd floor with no elevator. The apartment need some fixing, not much and depending on the buyer’s criteria. Price: 180,000€
45 m2 apartment for sale in the Eixample district (Balmes Street), in a classical building, 4th floor with elevator. The apartment is second hand and might need some actualization.