Weimar, Germany's Duchess Anna Amalia Library is set to reopen on 24 October after three years of restoration following a disastrous fire on 2 September 2004. Renovations to the building, a 16th-century palace, have included upgrades to the security and fire suppression systems.
Some 50,000 books (not to mention a rich collection of sheet music and manuscripts) were damaged or destroyed by fire and/or water damage: of those 16,000 have been restored (at a cost of $95.4 million), and replacements have been found for another 12,500.
[h/t Shelf:Life]
