Dedicated to the Mother of God, the Sé Patriarcal de Lisboa, or Basilica of Santa Maria Maior, is the headquarters of the Patriarchate of Lisbon and the Sé parish. Built in the 12th century, it is the oldest church in the capital. It has undergone several interventions over time, particularly after the 1755 earthquake, and has been classified as a National Monument since 1910.

Lisbon's Sé Cathedral has a recognised value, not only religious and spiritual, but also historical and architectural. Whoever visits this monument also has the opportunity to climb up to the high choir, where it is possible to obtain a breathtaking view of the cathedral's interior.