Rihanna Rented a Palace for the Night!!!

Rihanna knows that a true queen can't live without her palace ... even for a couple of nights.

The pop star splurged on the two-story Royal Penthouse Suite at Vienna, Austria's Park Hyatt Hotel and dropped a cool $21k a night.

Rihanna's suite had four terraces overlooking the city, 3 kitchens, 4 bathrooms and a private gym.

And you thought Beyonce was baller in Paris.