This is like a reverse youth hostel. Elderhostels have accomedations similar to most youth hostels, but are for the more mature travlers. These are affordable, but not luxious accomendations for travlers.
A program created by non-profit organizations for older adults, typically 55 and older, geared towards educational adventures and learning. With over 8,000 tours in the 50 US states and 90 other countries.
An elder hostel is for people of retirement age that features educational travel. They feature trips around the world and attempt to keep prices low for participants.
Its basically like a youth hostel but for older folks. They have outings and group events. I haven't been to one, but I researched them for my mom and they look like a really great organization..