The couple Rafa Castells and Alba Yruela, who we featured a while back, have returned to Barcelona for the summer and sent us the first part of their summer photo diaries. They say it's getting hotter by the day, so night is the only time to escape with friends to the rooftops, beaches and parks until the sun rises again.

Photographs 1 - 8 by Rafa Castells.

Photographs 8 - 16 by Alba Yruela.