Your 04:00 departure from Chennai means a long travel day, so arrive at the airport around 01:00–01:30 for international check-in. After landing at Barcelona–El Prat Airport at approximately 13:30, allow 60–90 minutes for immigration and baggage. The Aerobús runs frequently to Plaça de Catalunya and takes about 35 minutes; a taxi usually takes 25–40 minutes depending on traffic and costs roughly €35–45 to central Barcelona. Check in, freshen up, and take a short rest before heading out again.
Begin at Plaça de Catalunya, the city’s natural meeting point between the Eixample and old town. Spend around 30 minutes getting oriented, then walk south along La Rambla toward La Boqueria. The market is generally open Monday–Saturday from around 08:00 to 20:30, but individual stalls often start closing in the early evening, so go before about 18:30 if you want the liveliest atmosphere. Browse the fruit stands, jamón counters, and small tapas bars, but compare prices before ordering—central market counters can be noticeably more expensive than neighborhood spots. Keep phones and wallets secure on La Rambla, particularly in crowded areas.
Continue into the Gothic Quarter, where the best experience is simply wandering without following the busiest route. Explore the narrow medieval lanes around Plaça del Rei and Plaça Sant Felip Neri, then visit Barcelona Cathedral. Its main interior is usually open to visitors until early evening, with modest admission often around €9–10; opening hours can change for services, so check the cathedral’s official schedule on the day. From the cathedral, walk roughly 15 minutes through the old city to Tapeo Born in El Born for dinner. Expect about €30–45 per person with several tapas and drinks; arriving around 19:30–20:00 helps avoid the later rush. After dinner, take a relaxed walk through El Born, then use the metro or a taxi back to your hotel rather than adding another major sight to an already travel-heavy day.