The Portuguese Camino has a huge amount of architectural heritage. In Tui, we found the Cathedral of Santa María from the 12th century, it was built following the Romanesque style, to which later Gothic elements were added. You have also to visit in Tui the Church of San Telmo. It is a unique example of Portuguese Baroque style in Galicia. It was built on the house where the saint died, of which there is still a wall of the crypt.
In Vigo you will find the old Collegiate Church of Santa María de Vigo (1816-1836), now the co-cathedral of the Diocese of Tui-Vigo. It is a neoclassical construction erected on the remains of a Gothic church burned down by the pirate Drake. In Redondela, the Church of Santiago of the 11th century, stands out because of its interesting façade and the carved of Santiago pilgrim that has in the altarpiece of the high altar.
In Pontevedra, in the Alonso de Fonseca Square is the Church of Santa María la Mayor (15th century), declared a minor basil by John XXIII. It is one of the jewels of Galician art, in which the Elizabethan Gothic style is mixed with Portuguese styles and some trends of the Spanish Renaissance.
In Padrón, you can visit the Church of Esclavitude, which is a little further away from the old town of Padrón. The Church of Esclavitude is from the 18th century, and its style is Baroque. If you want to access it you have to climb a stone staircase with two lateral accesses. Legend tells that an ill man on his way to the hospital in Santiago de Compostela stopped to drink at the fountain. That fountain had the image of a virgin in stone. Then the sick man asked the virgin for a cure and then he drank from the water. After 72 hours he was cured of the evil he had.