20 of the Most Exquisite Libraries in the World

ROYAL LIBRARY OF DENMARK, COPENHAGEN

This particular temple to books was originally built in 1648, but was renovated to its current state in 1999. It’s colloquially known as the “black diamond” thanks to the shiny black metal segments on either side of a clear glass middle section. Inside, you’ll find a veritable treasure trove of European works with a special focus on Denmark (of course), with all of philosopher Søren Kierkegaard’s original manuscripts and the original copy of the first-known Danish book. The building is also home to the national photography museum, a café, a performance hall, and a large abstract fresco by renowned Danish artist Per Kirkeby on the inside of the ceiling.