A 30ft (9.1m)-high glass bridge allowing visitors to access Alina's Chapel at Oystermouth Castle near Swansea is to be officially launched at the historic attraction on 16 July.

The installation of the bridge to a part of the castle closed off for centuries formed part of a first phase of improvements at the site, which aims to establish a 'first-class' attraction. Funding worth £400,000 has been contributed by the Welsh Assembly Government via its historic environment agency Cadw, along with Heritage Lottery Fund support.

The European Union provided £585,000 through the Assembly's £19m Heritage Tourism project, while Swansea Council has also contributed towards the improvements. A new visitor centre and upgraded access for people with disabilities are also among some of the improvements to have been undertaken at Oystermouth Castle.

Welsh First Minister Carwyn Jones said: "Castles such as this are a physical reminder of our rich heritage and tell the story of our nation."