The Corey House is a two-storey brick building from 1907, built as a hotel for travellers arriving on the Kansas City Southern Railway and listed on the National Register of Historic Places. It sits at the corner of Main and 2nd, in what remains of Grove's small original downtown.
It is not a museum — the building has been adapted for other uses over the years — but the façade is the best surviving piece of early-twentieth-century commercial architecture in town and worth a few minutes if you are walking the centre.