• Click below to watch a video report by ITV News Anglia's Tanya Mercer...

One of the most ambitious conservation projects every undertaken by the National Trust is underway at Ickworth House in Suffolk.

The famous Grade 1 listed Rotunda is being retiled- at a cost of over £5 million. A huge undertaking that involves careful planning, detailed logistics, skilled craftsmen and more than 270 miles of scaffolding poles.

It's one of the most ambitious projects the trust has undertaken. Credit: ITV News Anglia

It took 2 months alone just to build the scaffolding. There are over 270 miles of scaffolding poles alone.

The work is logistically complicated- the rotunda is as high as 8 double decker buses. Credit: ITV News Anglia

42 tonnes of Westmorland slate will be used to cover the roof sourced from the same place as the originally slate and 7,000 slate tiles will be hand cut and fitted on the magnificent Rotunda.

The roof has now been stripped to begin the restoration work Credit: ITV News Anglia

The scaffolding poses a problem for the house as the Rotunda provides a main source of light for the main display area and exhibitions below.

The main display area has been thrown into darkness. Credit: ITV News Anglia

You are seeing Ickworth presented in a new light, this is an opportunity to experience sort of theatre and drama of this rotunda, so you're met with a sense of scale, a sense of perspective and really by turning the lights down and sort of stripping back some of the presentation, we're able to spotlight things like out amazing architecture and objects of art in the collection.

Louisa Brouwer Regional curator for East of England, National Trust
7000 tiles will be hand cut and fitted to the rotunda Credit: ITV News Anglia

The work will be finished in the summer, when the new roof will be unveiled - and the crowning glory of this iconic building restored.