Westminster Abbey in London is one of the world's great churches, welcoming over two Million worshippers and visitors annually. "The Queen's Diamond Jubilee Galleries" are a new Museum inside Westminster Abbey, located in the medieval Triforium, a Gallery running 16 m (52ft) above the Abbey floor. Hidden to the public for over 700 years, the opening of the Galleries marks an exciting moment in the Abbey's history. The official opening by Queen Elizabeth and Prince Charles took place on 8 June 2018. Since 11 June 2018 the Museum is opened for the public. Displaying 300 treasures from the Abbey's collection, many for the first time, the new galleries reflect the Abbey's thousand-year history. This precious collection is displayed in 42 GLASBAU HAHN showcases. Their design adapt perfectly to the environment. We have built Wall- Freestanding and Table cases in order to meet the different requirements. During the opening Queen Elizabeth and Prince Charles were excited and full of praise for our work.