How times have changed for Roman nobles, who've long shied away from mingling with the masses. Now they're now opening the doors to their secret palazzos -- for a fee. Guided tours, complete with anecdotes and munchies, now greet guests at luxurious residences once restricted to blue bloods. Some of the buildings that still house Rome's aristocrats also offer sumptuous rooms for rent, giving guests a taste of the good life.

Residenza Ruspoli Bonaparte. Canopy beds, silk wallpaper, parquet floors, plush velvet sofas and tables inlaid with onyx and precious stones make this lavish 1500s palace, designed by architect Bartolomeo Ammannati, an elegant treat for guests.