Hi, I'm Airborne90 and I'm just starting to contribute to articles here on Wikivoyage, though I do have prior experience contributing to wikis such as Wikipedia and Wikimedia Commons.
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.