After seven days of hard work the support structure for the XENON1T cryostat has been finished this month. The photo shows this support structure which sits inside the massive water tank. A total of 8.5 tons of steel with an ultra low radioactive background have been used for this construction. The cryostat vessel, weighting itself one tonne not counting the xenon, will hang inside this support structure. This work has been done by technicians and students from Nikhef and LNGS.