David L. Ryan/Globe Staff

Restoration Hardware's new store on Boylston Street was formerly occupied by Louis Boston.

David L. Ryan/Globe Staff

The building has a reinterpretation of an 1892 traction and counterweight elevator inspired by a model in L.A.'s Bradbury Building.

David L. Ryan/Globe Staff

A chandelier hung in the new store.

David L. Ryan/Globe Staff

The renovations are part of a dramatic two-year transformation of the historic landmark at 234 Berkeley St.

David L. Ryan/Globe Staff

There are four "clubrooms" on the third floor.

David L. Ryan/Globe Staff

The store is intended to bring a new type of retail experience to the Back Bay.

David L. Ryan/Globe Staff

Restoration Hardware employee Danielle Bolas sprayed linen as workers set up the new store.

David L. Ryan/Globe Staff

Kate Doerr and Travis McCullar set up a table.

David L. Ryan/Globe Staff

The store also has a 24-foot Eiffel Tower model.

David L. Ryan/Globe Staff

The building was also once home to the New England Museum of Natural History.