Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Historic Centre of Oporto, Luiz I Bridge and Monastery of Serra do Pilar ' has mentioned 'Estuary' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| Located along the Douro River estuary in northern Portugal, Porto is one of the oldest European centres, and its core was proclaimed a World Heritage Site by UNESCO in 1996, as "Historic Centre of Porto, Luiz I Bridge and Monastery of Serra do Pilar". | WIKI |