The page says IVHRRA is a family-oriented metal detecting club in northern Illinois, formed in October 2010. It says meetings are the second Monday at 7 p.m. at 931 Third Street, LaSalle, IL. The same page says current enrollment is 40 members and also says the club now has 132 members. It does not name the building.
The map pin is the published meeting address. Meeting times change. Confirm with the club before you visit.