POLISH SOCIETY OF YOUTH HOSTELLING (PTSM) created in 1926 (as third in the world) is the representative of youth hostelling international. PTSM means:

• domestic and international PTSM card
• over 300 registered youth hostels being a tourist accommodation for tourism and sightseeing movement
• over 120 thousand members of the Society
• over 1.800 of PTSM associations (mainly school ones)
• over 80 so called " PTSM typical routes" for hiking camps
• hundreds of special events
• tourist qualifications courses for teachers and teenagers