São Julião Lighthouse
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 . 
<triplet> Oeiras <subj> Lisbon District <obj> located in the administrative territorial entity <triplet> Lisbon District <subj> Oeiras <obj> contains administrative territorial entity