The town of Sintra, near Lisbon, is certainly a must-see destination in Portugal.
Here you'll find some exceptional palaces and villas, often colourful and convoluted, the ruins of a Moorish castle and even a gigantic well into which you descend by staircase.
Here I present the National Palace of Pena.

https://www.rivagesdumonde.fr/blog-rivages/visite-sintra
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