Turabeg Khanym Complex, opposite the ticket office, is still the subject of some debate. Locals and some scholars consider this a mausoleum, though no-one is too sure who is buried here. Some archaeologists contend that it was a throne room built in the 12th century (it appears to have a heating system, which would not have been used in a mausoleum). Whatever its function, this is one of Central Asia’s most perfect buildings. Its geometric patterns are in effect a giant calendar signifying humanity’s insignificance in the march of time. There are 365 sections on the sparkling mosaic underside of the dome, representing the days of the year; 24 pointed arches immediately beneath the dome representing the hours of the day; 12 bigger arches below representing the months the year; and four big windows representing the weeks of the month. The cupola is unusual in early Islamic architecture and has its equal only in Shiraz, Iran.