Barry Chin/Globe staff

Beginning Saturday, the Government Center T station will close for an $82 million overhaul that is expected to last until spring 2016.

MBTA

The project will be capped by innovative landscaping and a gleaming, four-story glass headhouse designed to reshape the look and feel of dreary, windswept City Hall Plaza.

Barry Chin/Globe Staff

Most of the construction — and the reason the project is scheduled to take more than two years to complete — will occur underground and behind the scenes.

Barry Chin/Globe Staff

Parts of the station date to 1898, and it has not seen a major renovation since the 1960s.

Barry Chin/Globe Staff

Once completed, the revamped station will be handicapped accessible.