During my holidays with my parents (as a child), especially in Polish/Czech/Slovak mountains, we were collecting ink stamps from tourist attractions, mountain shelters, national park entrances. These stamps work as a souvenir or as a confirmation that you have visited that location. They seem to be pretty popular in Poland even nowadays, as every museum, gallery, tourist office has at least one. Therefore, me and my wife started collecting ink stamps from locations visited during holidays in a special notebook. We have managed to collect some in Slovakia, Czechia, Ukraine, Italy, or even in San Marino.
Either by not knowing the exact English name, or because of lack of such ink stamps, I cannot find any information whether these exist in the USA. After the COVID pandemic we plan to visit the USA (either the South West or the East Coast - yes, a Fallout 3/NV fan indeed).
Do such souvenir ink stamps exist in the USA, in what kind of locations are they available (national parks, shelters, museum, tourist offices, post offices?), and how are they called exactly?
As I need to be precise, I limit the question to the USA, but if you have such a knowledge about any other, especially non-European country, do not hesitate to answer in a comment :)