All the tickets for behind-the-scenes tours of a world-famous Cardross ruin have been snapped up in just a few days.

St Peter’s Seminary, the iconic modernist ruin north of the village, will open to the public for one weekend as part of the programme for Doors Open Day.

But if you haven’t already got your hands on a ticket for the guided walks on September 23 and 24 you’re out of luck - because every place was snapped up in less than a week.

Built as a college to train Catholic priests in the 1960s, the seminary was only in use for 14 years and has been abandoned for decades.

It is celebrated worldwide as a masterpiece of modernist architecture and its decay has only added to its otherworldly charm.

Arts outfit NVA, which stands for “nacionale vita activa”, the Ancient Greek ideal of a lively democracy, where actions and words shared among equals bring new thinking into the world, are central to the project.

NVA are set to reclaim the future of the Grade A listed building and establish a major new arts venue and heritage attraction on the west coast of Scotland.

The building’s inclusion in Doors Open Day provides a rare opportunity for members of the public to explore the ruin before construction begins.

The ambitious plans for St Peter’s have been in development for almost a decade and were given a substantial boost in 2016 with the confirmation of £4.2 million in grants from Heritage Lottery Fund and Creative Scotland.

The proposals are widely recognised as one of the most ambitious artist led regeneration projects of our time.

The design rationale and approach at St Peter’s will become an exemplar for the imaginative re-use of 20th century architecture.

The scheme will partially restore the former seminary and its surrounding Victorian designed landscape, creating the first intentional modernist ruin in the UK.

On completion the new venue will host a distinctive programme of events and exhibitions.

Unlike traditional heritage restoration projects, there will be no attempt to turn back time.

The building will remain in a state of ruin, with a combination of partial restoration, consolidation and new design creating a series of programmable spaces across the 105-acre site.

Construction work will partially restore the stunning chapel as an indoor events space within a wider consolidation of the derelict seminary buildings and reinvigorate the surrounding woodland and productive gardens, gradually bringing the landscape back to life.

Through a partnership with Reigart Contracts, Significant environmental improvement work has already been carried out to remove hazardous materials and debris from the seminary buildings.

The only building in West Dunbartonshire taking part in this year’s Doors Open Days festival is Strathleven House, in Dumbarton.

Half-hourly tours of the A-listed mansion on the Vale of Leven Industrial Estate will be available from 11am-3pm on Saturday, September 30 and no appointment is necessary.

West Dunbartonshire now participates in the programme every two years, giving people a chance to visit properties in the surrounding area instead - see below.

Stabilisation works using innovative construction materials have saved 80 of the iconic vaults in the chapel and refectory from collapse.

These works have gone a long way towards rescuing the A-listed building from demolition.

Daytime walked tours of St Peter’s Seminary will take place on September 23 and 24.

Tickets for the event are now sold out.

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