Which Wikimedia sister project is a free web-based travel guide?

Which Wikimedia sister project is a free web-based travel guide? Wikivoyage is the answer.

Wikivoyage provides collaboratively written guides to destinations and travel topics. Its articles cover countries, cities, districts, national parks, itineraries, phrasebooks, and practical subjects such as transport or diving. Like Wikipedia, it is edited by volunteers and uses MediaWiki software, but its purpose is travel guidance rather than encyclopedic reference.

The project began in 2006 when German and Italian Wikitravel contributors forked their work and launched Wikivoyage. In 2012, the English Wikitravel community also moved across, and the Wikimedia Foundation began hosting the project. Wikivoyage officially relaunched as a Wikimedia project on January 15, 2013.

A common mix-up is confusing Wikivoyage with Wikiversity or Wikisource. Wikiversity focuses on learning materials and communities, while Wikisource hosts free-text documents. Wikivoyage is the Wikimedia project specifically organized around travel planning.