Gerebeg or Grebeg has meaning "wind noise". Garebeg is one of the custom Kraton Ngayogyakarta that for the first time organized by the Sultan Hamengku Buwana I. This royal ceremony involving the entire palace, all royal officials and involving all levels of society. Formally, Garebeg religious nature associated with the birthday of Prophet Muhammad and the Islamic holiday (Eid al-Fitr and Adha Idhul).    Politically Garebeg also sets the title of Sultan who is kemuslimatan (Ngabdurrahman Sayidin Panotogomo Kalifatullah). During the year there were three times that of Garebeg Garebeg Mulud, Garebeg Large, and Sawal Garebeg held in the Palace complex and the surrounding environment, such as in North Square.    Garebeg Mulud held to commemorate the day of birth (birthday) of Prophet Muhammad which falls on 12 Rabi right. Month of Rabi called Mulud month in the Islamic Javanese calendar. That is why Garebeg held to commemorate the birth of Prophet Muhammad, called Garebeg Mulud. Actually, on 12 Rabi 'has two important meanings in the lives of the Prophet, as Muslims believe that Prophet Muhammad was born and died on the same date and month.    Tradition to celebrate the birth of the Prophet of this new religion of Islam grew after spreads to other countries outside the Arabian peninsula. The birth of the Prophet Muhammad is not a legal holiday Islam, because Islam recognizes only two holidays, the Eid al-Fitr and Eid al-Adha. Celebration of the birthday of the Prophet Muhammad as a royal ceremony was spearheaded by the Sultanate of Demak, from age to age preserved by the Javanese king who became known as Garebeg Mulud very popular.    Before Garebeg Mulud held, there are some traditional activities carried out within the Kraton Ngayogyakarta, namely:

• Ceremony Rehearsal Rehearsals for the readiness of soldiers by the Regent Palace Nayoko Kawedanan Ageng Soldiers, 
• Numplak ceremony marking the beginning of the manufacture of Diamonds as mountains,
• Ceremony Miyosipun Hajad Dalem as the peak discharge mengiring Hajad ceremony with the intangible Dalem mountains from the palace to the mosque by Sultan Pengulu Kyai.

    Besides Garebeg Mulud, the Palace also organizes Garebeg Ngayogyakarta Mulud Dal happens once every one tiger, and held in a special way with great pomp, as well as more cultural elements reveal the identity of the old king, the kingdom of Java.    In Garebeg Mulud Dal, Sultan is present in the Great Mosque in the center of the public with a show full of Javanese tradition with elements of ancient Javanese culture, a wide range of Kraton which is a sacred heritage as the traditional statement that the Sultan and the Sultanate of Yogyakarta is the legitimate heir of the kings and previous Javanese kingdoms. Also expressed a traditional attitude of the sovereign as the representative of his tribe in honor of the ancestors.    Attendance at the Great Mosque of Sultan is also intended to conduct Islamic religious activities that kicked stacks bricks are placed in the open door on the south wall of the mosque. This is a symbolic act representing the people of the Sultanate era has officially left Demak HinduBudha religion to embrace Islam. The ceremony is performed only once every eight years or once in eight years.

    Dal Mulud mountains called the Mountains or the Mountains Kutug Bromo. At the peak, given a hole to reveal a brazier of burning coals contain a large lump of incense, so that continuous thick smoke when blown. Pajangannya a wide range of colorful cake is almost the same as the display Gunungan Lanang, varies with Wadon Mountains. At the bottom, repose tulak banung cloth and placed upright on a giant framed wooden tray measuring 2 x 1.5 m.

    Square of the South is a square in the southern part of Yogyakarta Palace. Square of the South are often referred to as Pengkeran. Pengkeran derived from pengker (form manners) of buri (rear). This is in accordance with South keletakan square which is located behind the palace. The square is surrounded by a square wall with five gates, one fruit on the south side and on the east and west sides of each of the two pieces. Between north and south gate on the west side there is ngGajahan an elephant's cage in order to maintain the Sultan. All around the square planted with mango trees (Mangifera indica; family Anacardiaceae), pakel (Mangifera sp; family Anacardiaceae), and kuini (Mangifera odoranta; family Anacardiaceae). Banyan tree there are only two pairs. Pair in the middle of the square is called Supit Urang (literally = claw shrimp) and another pair on either side of the south gate called the Wok (from bewok, harfiaf = beard). From the south side of the gate there is a road that connects with Plengkung Ivory Nirbaya.

    South of the square, once the training ground row royal soldiers, a day before the ceremony Grebeg. The place was also the scene of courtiers SOWAN wedana soldier along with his men, at night Fasting month of December 23, 25, 27 and 29. But since Sri Sultan HB VIII reigned, pisowanan is stopped.

   There is one tradition that is very interesting game in the town square called Masangin south. Masangin is entering the space between two banyan trees in the middle of the square in the eyes closed state. It seems trivial, but not easy. Many have tried, but failed. Always turn directions. you want to try??