Two well-known Oak Bluffs landmarks are being worked on in anticipation of summer.

The photogenic bandstand in Ocean Park (often erroneously called the gazebo), is undergoing a restoration.

And the Tabernacle in the Camp Ground is being refitted with original stained-glass clerestory windows. The work on the Tabernacle is part of a much larger $3 million restoration project which is taking place in phases over a period of years.

The Vineyard Haven Band, which performs regularly throughout the summer at the bandstand, will no doubt be feeling a good deal more secure this year. In recent years, band musicians have had to stay clear of the fragile rails, believing they could collapse at any time.

Now rotted posts that hold up the roof and rails that circle the structure will be replaced. The work is part of a two-phase project with an estimated price tag between $150,000 and $200,000.

The work is being done by Frank and Peter Dunkl of Chilmark. The bandstand roof sits on top of 12 posts. Two years ago the Dunkls made exact copies of five posts that were too badly rotted to be restored, using oak that had come from a ship’s lumberyard and was believed to have been left over from a restoration of the U.S.S. Constitution (Old Ironsides). Last winter, they worked on the rails and spindles.

Money for the project was tight, and Peter Dunkl said they tried to restore at least half of the redwood spindles. The other half are new and are made of white cedar. Replacement rails are made from old fir taken from demolished buildings, recut at a mill and cut again on the Island to match the old rails. Mr. Dunkl said the highly stable wood is perfect for the project, and will give years of service. New posts, rails and spindles will be installed before summer.

But after summer there will be more work to do. Richard Combra Jr., the town highway superintendent, said the floor needs to be replaced, as well as the entry door for the band. Sullivan O’Connor Architects Inc. of Oak Bluffs have assisted with the project. The bandstand is a historic building.

A temporary antenna atop the bandstand, just beneath the peak, will be relocated.

“When done, the only thing you will notice is that it will look brand new,” Mr. Combra said.

At the Tabernacle project work is taking place high above ground level. Last year the cupola was fully restored to look as it did a century ago. Atop the cupola, a new brightly lit cross can be seen for miles.

The $410,000 project that began in February involves fixing and redoing much of the upper clerestory, a series of large stained glass windows that provide interior daylight to the Tabernacle. Without the windows, the inside would be dark. Some of the windows will be opened for the first time, which will provide better ventilation on a hot summer day, said Bob Clermont, general manager and executive director of the Martha’s Vineyard Camp Meeting Association. The work is being done by Crocker Architectural Sheet Metal of North Oxford, the same firm that restored the cupola in the winter of 2007-2008. Much of the original stained glass has been preserved and is being incorporated into the project.

“We are fortunate that some of those glass panes didn’t fall during past windstorms or during performances,” Mr. Clermont said.

One of the hidden benefits of the cupola restoration is that it now acts a bit like a chimney, helping to move air through the Tabernacle. Prior to last year’s work, the cupola was mostly ornamental; its vents had been sealed and air did not flow through as it does now. The clerestory restoration, with the ability to open the windows, will assure additional movement of air.

The Oak Bluffs Community Preservation Committee has recommended $25,000 be put toward the clerestory project, subject to a town meeting vote next Tuesday.

Last year voters approved the Community Preservation Committee’s recommendation of $200,000 for the restoration of the cupola.

Mr. Clermont said fund-raising for the Tabernacle project has been slow, but he added: “The work needs to be done.”

He said the next project, phase five, involves replacing the asbestos roof. “That will be a huge expense,” he said.

And it may take years to complete.