![Black Diamond building, a modern waterfront extension to the Royal Danish Library's old building on Slotsholmen in central Copenhagen, Denmark Stock Photo - Alamy Black Diamond building, a modern waterfront extension to the Royal Danish Library's old building on Slotsholmen in central Copenhagen, Denmark Stock Photo - Alamy](https://c8.alamy.com/comp/T4M25H/black-diamond-building-a-modern-waterfront-extension-to-the-royal-danish-librarys-old-building-on-slotsholmen-in-central-copenhagen-denmark-T4M25H.jpg)
Black Diamond building, a modern waterfront extension to the Royal Danish Library's old building on Slotsholmen in central Copenhagen, Denmark Stock Photo - Alamy
![Denmark architecture; The Black Diamond, a modern extension to the Royal Danish Library Copenhagen, completed in 1999; Copenhagen, Denmark Europe Stock Photo - Alamy Denmark architecture; The Black Diamond, a modern extension to the Royal Danish Library Copenhagen, completed in 1999; Copenhagen, Denmark Europe Stock Photo - Alamy](https://c8.alamy.com/comp/W88HJA/denmark-architecture-the-black-diamond-a-modern-extension-to-the-royal-danish-library-copenhagen-completed-in-1999-copenhagen-denmark-europe-W88HJA.jpg)
Denmark architecture; The Black Diamond, a modern extension to the Royal Danish Library Copenhagen, completed in 1999; Copenhagen, Denmark Europe Stock Photo - Alamy
![The black diamond building of the Royal Library as seen from the Danish headquarters of Nordea bank - Copenhagen, Denmark The black diamond building of the Royal Library as seen from the Danish headquarters of Nordea bank - Copenhagen, Denmark](https://independent-travellers.com/denmark/copenhagen/miscellaneous/130.jpg)