The points can be used to reserve at any Worldmark resort. Here's a link to their resorts:

https://www.worldmarktheclub.com/resorts/

If you click on an individual resort, it will have a chart on the page that tells you the points requirement to stay there. For me, most of the value has been in trading externally into Marriotts and Westins (Worldmark has great trading power), and so far the only Worldmark location we've stayed at is West Yellowstone, but we haven't regretted the purchase.