São Julião Lighthouse - Credit: Wikimedia Commons
The São Julião Lighthouse is located in the fort of the same name, which is the largest sea defence structure in Portugal and is situated on a headland on the north bank of the River Tagus estuary in Oeiras, Lisbon District. It is a square masonry tower and the lantern is painted white, with a red dome. Read more on Wikipedia
Source: en.wikipedia.org