The main residence building was built by the Dutch in the late nineteenth century as a gift to the king to help strengthen ties. (dive-the-world.com)
For example, complex numbers were invented and the theory of them deeply investigated by the early nineteenth century, a mathematical development that seemed to have no relevance to physical reality. (firstthings.com)
The hall was built in the late nineteenth century as a place of worship. (kerlingallery.com)