One way to promote Wikivoyage is to make sure that we have coverage for popular destinations. There are a number of companies who make lists of the "best" or "most popular" destinations. Some of their results are listed here.
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.