Watch for a bit, change your system clock and reload the page.
The translated text says:
The artist, Mark Formanek, with the support of Datenstrudel created watches that are constructed in real time. 24 hours, 70 workers, 30 boards, 1611 changes. Construction of 4 meters in height and 12 in length, was constructed continuously throughout the day in Berlin Sculpture Park. Video of the process is synchronized with the time at which your computer is configured.
Cheers and Regards