Delft is a popular tourist attraction in the country. It is home to Delft University of Technology (TU Delft), regarded as center of technological research and development in the Netherlands, Delft Blue pottery and the currently reigning House of Orange-Nassau. Historically, Delft played a highly influential role in the Dutch Golden Age. In terms of science and technology, thanks to the pioneering contributions of Antonie van Leeuwenhoek and Martinus Beijerinck, Delft can be considered to be the true birthplace of microbiology, with its several sub-disciplines such as bacteriology, protozoology, and virology.
The city of Delft came into being beside a canal, the 'Delf', which comes from the word delven, meaning delving or digging, and led to the name Delft. It presumably started around the 11th century as a landlord court.
The town's association with the House of Orange started when William of Orange (Willem van Oranje), nicknamed William the Silent (Willem de Zwijger), took up residence in 1572. At the time he was the leader of growing national Dutch resistance against Spanish occupation, known as the Eighty Years' War. By then Delft was one of the leading cities of Holland and it was equipped with the necessary city walls to serve as a headquarters. An attack by Spanish forces in October of that year was repelled.