Complex sentence: The building was designed by Georg Wenzeslaus von Knobelsdorff modeled after the Pantheon in Rome and construction started in 1747, interrupted and delayed several times by economic problems.
Split into simpler sentences: The building was designed by Georg Wenzeslaus von Knobelsdorff modeled after the Pantheon in Rome. Construction started in 1747, interrupted and delayed several times by economic problems.