If your bucket list includes traipsing through Voltaire's private library or visiting the Vatican after hours, Kensington Tours' new Elite Collection offers a chance to get beyond the standard tourist experience.
"Creating extraordinary experiences, no matter the size of a client's pocketbook, is what Kensington Tours was built on -- and for those with extra means what could be more extraordinary than behind-the-scenes access to the sights, people and cultures that have shaped our world," Phil Sproul, president of Kensington, said in an email.
European Elite tours feature unique experiences in Britain, France, Italy, Spain and Montenegro, in which guests may bed down in ancient fortresses, famous vineyards, private yachts or hotels where Queen Elizabeth, Ernest Hemingway or Oscar Wilde have slept.
Prices range from $15,487 to $45,185 a person.
The seven-day London Lords of the Manor tour (from $15,487) includes aristocratic home tours and insider experiences at Windsor Castle, Stonehenge and Prince Charles' organic gardens at Highgrove (skipping its current three-year wait list).