Given a text passage, you need to generate a suitable title as the output. The output title should be one of the words/phrases used in the passage and must be no longer than five words. 
Q: Paragraph:    The tower had two floors and a mezzanine . On the first floor was the famous Sundial Room or Meridian Room , which was initially an open loggia . Pope Urban VIII had it enclosed and it was subsequently decorated with long sequences of frescoes painted between 1580 and 1582 by Simon Lagi and the two Flemish artists Paul and Matthijs Bril . Today the tower has paintings by Cristoforo Roncalli and Matteino da Siena . 
 The Sundial Room , also called the Meridian Hall , was once the residence of Queen Christina of Sweden , then newly converted to Catholicism . The room was further modified by two additions which gave it its current name : a sundial , and a delicate but sophisticated anemoscope which was fixed to the ceiling of the Meridian Hall . These were created by Ignazio Danti , the papal cosmographer , in association with the Gregorian Calendar Reform . The sundial consisted of a straight line in white marble running across the floor in a north @-@ south direction , intended to measure the height of the Sun at noon according to the seasons of the year . The observations made with the sundial provided essential confirmation of the need to reform the Julian calendar . The anemoscope , in contrast , was a complex mechanism attached to the ceiling which was used to measure the strength and direction of the wind but soon stopped functioning . The instrument may have led to the other name of the tower , Tower of the Winds ; however , an ancient observatory at Athens was also called the Tower of the Winds and might have been the source for inspiration . 
 The interior walls and ceiling of the hall were richly decorated , in some cases with gaudy frescoes of the hills and Roman countryside , the Pantheons , religious themes , the buildings surrounding the area , and naval shipwrecks with Jesus calming the storm and so forth .   
 Question: what is the suitable title of the passage ?
A:
Features