been interpreted as a rainwater harvesting structure and the water is said to be clean and fresh (though close to the sea). The ceramic pipe ( in diameter) plumbing seen running down from the niches of the tower into the well was meant as a supply source. Since the ancient plumbing system is said to be in its original form, it needs to be cleaned and its layout ascertained by further studies to describe the drainage network that was originally built as part of the tower. The ceramics of the plumbing system and the silt deposited in them could also help to fix the age of the tower by using thermo-luminescence technique. Also seen in the tower, between the 2nd floor and the 7th floor, is a gutter of semicircular shape at every floor. It is made of ceramic pipes fitted one above another and joined by lime mortar. The pipes are presumably produced with the potter's wheel technique. They are in diameter with thick walls and each segment is long. Similar gutters are seen from the ground floor up to the foundation level but with the four-cornered ceramic pipes of × size, which run outside through the wall. Restoration Subsequent to the declaration of the entire cultural property including the tower and the city walls as a UNESCO World Heritage Site, an earthquake in 2000 caused damage to the property. UNESCO, noting the lack of efforts by the national authorities to adequately conserve this cultural heritage then listed these monuments under the "List of World Heritage in Danger," from 2004 to 2009 with the comment "Loss of authenticity due in part to the earthquake in 2000 and to the urban development pressures." However, after the concerned authorities evolved a Conservation Master Plan and assured of adequate conservation and management of the property, the "in danger" tag attached to the heritage site has been removed by UNESCO in 2009. It was also requested that the State Party would submit to the World Heritage Centre, by 1 February 2010, an updated report on the state of conservation of the property and progress made for consideration by the World Heritage Committee at its 34th session in 2010. In 2011–2013 the tower underwent a restoration. At that time, in 2011, plexiglass barriers were installed around the tower's observation deck to prevent suicides. In popular culture The legendary tale of the king willing to