Traffic crawls through a narrow street where a poster on the wall of a house reads in Portuguese "Chaotic traffic harms everyone, residents and visitors", in Sintra, Portugal, Friday, Aug. 9, 2024. (AP Photo/Ana Brigida)

Tourists queue to catch a shuttle bus from the gate up to the the 19th century Pena Palace, in Sintra, Portugal, Wednesday, Aug. 14, 2024. (AP Photo/Ana Brigida)

Tourists queue to visit the interior of the 19th century Pena Palace in Sintra, Portugal, Wednesday, Aug. 14, 2024. (AP Photo/Ana Brigida)

Tuk-tuks drop off and pick up tourists at the gate of the 19th century Pena Palace in Sintra, Portugal, Friday, Aug. 9, 2024. (AP Photo/Ana Brigida)

A person dressed as movie character Captain Jack Sparrow steers a tuk-tuk with tourists past Martinho de Almada Pimentel's mountainside mansion Casa do Cipreste, in Sintra, Portugal, Friday, Aug. 9, 2024. (AP Photo/Ana Brigida)

Tourists visit the 19th century Pena Palace in Sintra, Portugal, Wednesday, Aug. 14, 2024. (AP Photo/Ana Brigida)

A view of the National Palace in Sintra, Portugal, Friday, Aug. 9, 2024. (AP Photo/Ana Brigida)

Tourists visit the old center of Sintra, Portugal, Friday, Aug. 9, 2024. (AP Photo/Ana Brigida)

Martinho de Almada Pimentel poses for a photo in his mountainside mansion,Casa do Cipreste, that his great-grandfather built in 1914 in Sintra, Portugal, Friday, Aug. 9, 2024. (AP Photo/Ana Brigida)

A poster hanging from a balcony reads "Sintra: A traffic jam in paradise", in Sintra, Portugal, Friday, Aug. 9, 2024. (AP Photo/Ana Brigida)