In this article, we recommend the best activity to do in Buenos Aires, which is the free English tour inside Casa Rosada. Tours in English are on Saturdays at 12.30 p.m. only and you will need to book on the official site, you will be asked for a passport. Check here for more details, you should not miss the tour inside the pink house!
The metropolitan cathedral of Buenos Aires is the main Catholic temple of Argentina. The hours for visits are from Monday to Friday from 8 am to 7 pm and Saturday and Sunday from 9 am to 7:30 pm. Guided visits are free. Check here for mass times. The cathedral is located at Plaza de Mayo.