Tourism involves traveling for pleasure and enjoyment away from one's home. There are many different types of tourism, including beach tourism where people relax on beaches, winter tourism which started with wealthy Europeans visiting Alpine resorts for skiing, and medical tourism where people travel to other countries for medical treatments not available in their own. Other forms are educational tourism by exchange students, sports tourism for fans attending events, package holidays organized by tour companies, spa tourism for wellness treatments, adventure tourism for thrilling activities, religious tourism making pilgrimages to holy sites, and more recently ecotourism with less environmental impact.