Four years after it was destroyed by a tornado, construction for a bigger and better Big Well Museum is underway in Greensburg.

City leaders broke ground during a ceremony Monday morning. Officials hope to have the new, $3 million museum open by May 2012.

The new museum will include exhibits on Greensburg’s history, including the digging of the Big Well, the May 4, 2007 tornado that destroyed the museum and most of Greensburg, and rebuilding the town.

Before the tornado, tourists often stopped in Greensburg to see a well that is among the world’s largest hand-dug wells.