The Royal Palace in Madrid is an exquisitely beautiful building. It is one of the most completely preserved royal palaces in the world. The Royal Palace, or Palacio Real, mixes Baroque architecture with Classical style, and is the largest royal palace in Europe by floor space, covering 135,000 square meters. The entire palace has more than 3,400 rooms of which about fifty are open to the public. Visitors can take a tour of the interior, where such treasures as the Stradivarius Room holding five Stradivari family made instruments are on display, as well as ceiling frescoes painted by masters like Velasquez and Bayeu.