The coat of arms tells the story of this riverside parish of Porto: the gold, the Arrábida Bridge, the farms and industry, and the wheel of St. Catherine.

On the hill top, the small Santa Catarina chapel still retains the inscription of its foundation in 1395, one year after the birth of Henry the Navigator, son of King John I, on the nearby Ribeira.

This development continued and was reinforced during the 20th century, especially after the Arrábida bridge was built in the 60's, increasing traffic and facilitating access to the westernmost part of Porto.

Thus, Lordelo do Ouro was kept as a pristine parish with acres of cultivated land and shrubs forgotten between Foz to the West and the center of Porto to the East, until after the revolution.

The chapel of Santa Catarina provides a glance over the ocean, the southern margin of Gaia, the bridge of Arrábida, and the remaining patches of green.