Museums. On the first Sunday of the month from 10 am to 1 pm, all the museums in Porto have free entrance. These include the Port Wine Museum, the Serralves Foundation, Museu Nacional Soares dos Reis and the Tram Museum. Travel tip: The Porto Card includes free admission to 11 museums, as well as other discounts.

In 2026, free admission to museums in Porto is primarily reserved for Portuguese citizens and residents. Under a major cultural policy update that began in 2024 and was solidified in 2025, residents of Portugal can visit 37 national museums, monuments, and palaces (including the Soares dos Reis National Museum in Porto) for free 52 days a year, on any day of the week. This replaced the older system where Sunday mornings were free for everyone. For international tourists, most national museums in Porto now charge a full entry fee on Sundays to help fund heritage preservation. However, some local or private museums may still offer specific "Free Sunday" windows or "First Sunday of the Month" specials. A high-value 2026 "pro-tip" is that many of Porto's most iconic sites, like the Serralves Museum, offer free entry on the first Sunday morning of each month for everyone, but you should check their specific website 24 hours in advance, as these slots are often limited and require a pre-booked digital "Zero-Euro" ticket to manage crowds.