The calendar clock from Prague's Old Town astronomical clock was dismantled by clockmaker Petr Skala yesterday, during the ongoing renovation of the Old Town Hall tower at the Old Town Square in the Czech Republic's capital. The astronomical clock will be restored to a form reflecting original elements from the end of the 19th century. Some parts will have new colours and the propulsion machine will be changed, too. The reconstruction and restoration works began last month, and are expected to take 18 months and cost about €1.85 million (S$2.87 million). The Old Town Hall was built in 1338.