More historic buildings and landmarks showing signs of the ravages of time are highlighted on a new ''at risk'' list published by English Heritage today.

Hundreds of ruins, monuments and follies and even buildings still in use across the north-east are already included in the catalogue, updated annually by the Government agency.

Having drawn attention to those in a poor condition, the organisation will try to act as a catalyst for improvement, either through funding or by seeking partners willing to consider new initiatives to protect the nation's architectural treasures from further decay.

Nevertheless, there are always more to add to the list; this year's crop includes the Stephenson Engine Works and the New Tyne Theatre in Newcastle and the Freeman's Town Hall in Alnwick.

However, the fenced-off remains of an old racecourse grandstand overlooking Richmond, North Yorkshire, was chosen for the launch of the fifth Buildings At Risk list yesterday.

Built in 1777, the last remaining example of York architect John Carr's work was partly demolished by Richmondshire Borough Council in the 1970s.

However, the former local authority's more enlightened successor is now to work with English Heritage on research which could led to the ruin's eventual repair - or even its complete restoration.

''We will be offering a small grant to Richmondshire District Council so it can carry out a conservation plan,'' said English Heritage historic buildings architect, Giles Proctor.

''It is not impossible that someone will look at the whole racecourse and identify a long-term solution, either for the ruins or even the reconstruction of the grandstand, as long as there is a viable use for the building.''

Meanwhile work at a colliery museum in County Durham was being highlighted as a success story.

The eastern winding house and the shaft head building at Woodhorn are in need of urgent repair but English Heritage's north-east regional director, Peter Bromley, said a partnership with the community had already had positive results.

''Today we are seeking to raise awareness of the huge amount of buildings and properties which have a significant heritage value in the north east to warrant preservation and protection for future generations,'' he said.

''The winding house and fan house at Woodhorn Colliery are a prime example where we have worked in partnership with other organisations to prepare a rescue plan to make them safe and bring them back into use as a viable part of the museum.''