Articles in this category have been tagged with the {{movetocity}} template to indicate that listings should be moved from the region article template to a city article per Wikivoyage:Region article template.
This website uses the Wikivoyage API to get and display all the information you see. This is the MediaWiki API, which is a general API for accessing data from Wikimedia projects. You can find information about it here: MediaWiki API.