Poltrona Frau Custom Interiors has furnished the main auditorium of the Finnish National Opera House in Helsinki with 1350 seats. Every year the opera house stages around 20 different operas in 140 performances, and welcomes around 250,000 visitors. The Finnish National Opera House project is the work of architects HKP and designer Neil Morton of Theatre Plan. For its design, they chose to honour the history of the theatre by leaving the atmosphere of the original space intact.