Aqueducts and other water supplies
This is another one of those Lost Places, that used to be used for water supply. These places can be found scattered across the whole island. The most recognisable one is the aqueduct near Sete Cidades.
However, you can also find abandoned pump houses in other locations, for example this one near the Lagoa Rasa:
If you’re visiting the waterfall Janela do Inferno, you will not only be able to admire some tunnels but also an array of old bridges which fit the category Lost Places well.