At first I wasn't sure about the trip to Sitges even though it was highly recommended by the locals I had met in Barcelona. On my way to Montblanc as the train was passing by Sitges, my interest for the town was aroused by the surrounding rocky mountains and the shimmering Baleanic sea. I bought the ticket and jumped on a train at Passeig de Gràcia, following the instructions of the lady who sold me the ticket. Soon, I was panicking as I realized that the destination of the train was St. Vincenç de Calders. I got off the train at the next station, Barcelona Sants, and looked for a platform that showed Sitges but I couldn't find any. The next train to St. Vincenç de Calders arrived, I asked an old lady boarding the train whether the train stopped at Sitges and she nodded bewilderingly so I got on the train skeptically. Thirty minutes later the train stopped at Sitges.
Everything you need to know about Sitges
Buses every 30 minutes from Sitges to the BCN airport terminal 1 for 5.60 Euro (3.6+2tax)