Complex sentence: There are Ficquelmont palaces in Venice, Vienna and St.Petersburg; the original family's castle in the locality of Ficquelmont (Thumeréville, current region of Lorraine, France) was burned down in 1877.
Split into simpler sentences: There are Ficquelmont palaces in Venice, Vienna and St.Petersburg. The original family's castle in the locality of Ficquelmont (Thumeréville, current region of Lorraine, France) was burned down in 1877.