 The Karlsborg Fortress and the Göta Canal, employing 60,000 men in a 23-year period, were the largest Swedish building projects of all time.The leading architect of the first half of the 19th century was also a soldier, Colonel Fredrik Blom, he designed a series of barracks and also the classically styled Skeppholm Church in Stockholm and, as the house architect to the royal family, he built the Rosendal Palace.In the second half of the 19th century the industrialisation of Sweden began.