The Royal Treatment - NYTimes.com Vienna's Palais Liechtenstein, one of Europe's most impressive privately owned palaces, will open for public tours for the first time in May after an extensive restoration. Once the residence of the royal family of Liechtenstein, the Baroque building was bombed during World War II and damaged further when an Allied aircraft crashed into its roof. Its four-year, $135 million face-lift restores the structure to its prewar glory, with a dramatic interior staircase, silk wall hangings and intricate parquet floors. The project was overseen by Hans-Adam II, the reigning prince of the tiny principality - who also owns another commodious palace just outside the city center, where he keeps his noted collection of Old Masters. While some of the revamped building will be marked off for the family's private apartments, visitors will finally get a peek at many of its gilded Rococo interiors, not to mention the prince's collection of Biedermeier and neo-Classical art and furnishings. Tours from $32; palaisliechtenstein.com.