Ancient Trees in Sintra
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The Walking Tree of Pena
Western Red Cedar (Thuja plicata). approximately 150 years. Paid entry (Parque da Pena ticket, part of the Sintra hills palace circuit)

The Fern Cork Oak of Quinta do Relógio
Cork Oak (Quercus suber). more than 300 years, Portugal's own register puts it at 350. Free, viewable from the public road; please don't touch or remove bark, the tree is under active pressure from souvenir stripping

The Plane Tree of Parque da Liberdade
London Plane (Platanus x hispanica). roughly 150 to 200 years, sources disagree. Free, public municipal park, open daily

The Araucaria of Monserrate
Norfolk Island Pine (Araucaria heterophylla). approximately 160 to 180 years. Paid entry (Parque e Palacio de Monserrate ticket)

The Pohutukawa of Monserrate
Pohutukawa (Metrosideros excelsa). genuinely uncertain, estimated between 175 and 275 years. Paid entry (Parque e Palacio de Monserrate ticket)