It's difficult sometimes to realise how small Barcelona is compared with London. Top to toe - from the high ring road to the sea front is about 6km - that's the length you'd drive down from where we live just off shoot up hiil/kilburn high road/edgware road to marble arch - ie about 1/3 of what you'd think of as central london. within that you go through everyting - the zona alta area where we live, gracia, the posh shops of the eixample and the old city itself
widthways is around 9km or around notting hill to old street in a straight line. after that you are out to the airport or heading out to the costa brava.
it seems an awful lot bigger than that with its broad one way streets and new york like grids. i guess the mountains and sea maybe give it a bigger perspective