The Pink City is one the most important attractions in Jaipur. This is what the old town, which was built by Jai Singh II, is called. The namesake derives from the buildings that were built of stucco in an attempt to imitate sandstone, and that were later painted pink to welcome the Prince of Wales. This color symbolizes the city's hospitality and luck, and also place it at the top of the list of what to do in Jaipur. The city is surrounded by a crenellated wall with ten gates and is divided into six districts. One district houses the palace complex which includes Hawa Mahal or the Palace of the Winds, as well as gardens and a lagoon. The Hawa Mahal is one of the more impressive things to do in Jaipur. It is a palace built in the year 1799 by Sawai Pratap Singh, which served as an extension of the zenana or chamber for the women destined for the harem. The building has five floors, is built of red and pink sandstone, and is encrusted in calcium hydroxide. The facade facing the street has a total of 953 small windows. Another one of the places to visit in Jaipur is Amber Fort, a palatial complex located near the city that was originally dedicated to the Mother Goddess known as Gatta Rani or Queen of the Past. Another one of the important things to see in Jaipur is the Jantar Mantar, one of the five astronomical observatories built in India by Jai Singh Maharaj. This is a collection of structural monuments to study the evolution of the shadows produced by the sun. There is still more stuff to do in Jaipur. The City Palace, historical residence of the majarashas, the Albert Hall Museum or the Observatory of Jai Singh are some examples of Jaipur attractions and Jaipur activities that you can not miss.