As many as 3,000 people toured the Northern Illinois Lego Train Club exhibit Saturday at the Arlington Heights Memorial Library, according to April Jo Harder, the library's communications and marketing specialist.
It took 11 train club members six hours to assemble the main display at the library.
The free exhibit opened Saturday and closes Sunday in the Hendrickson Room at the library, 500 N. Dunton Ave.
In addition to the exhibit, the library is offering a Lego Club in its Marketplace, where people can make a model, then display it at the library.
The exhibit is open from 11 a.m. to 4 p.m. Sunday.