Niche tourism refers to specialized forms of tourism focused on a particular topic such as food, sports, nature or culture. Some common niche tourism types include adventure travel focused on outdoor activities, agritourism involving farm experiences, geotourism and ecotourism exploring natural environments, heritage and cultural tourism visiting historic sites, and volunteer tourism where people travel to participate in community service projects. Niche tourism has grown in popularity as tourists seek more unique and immersive travel experiences beyond general sightseeing.