Muri Abbey
The earliest documented use of the name "Bruggo" has been dated to the year 1064, when Count Werner I attested to the possession of goods on the part of Muri Abbey in the area. The exact date, however, is contentious, as the "Acta Murensia" was first drawn up in 1160 and included a number of various older documents. Between 1164 and 1174 the place was mentioned as "Brucca" and between 1227 and 1234 as "Brukke". At the end of the 12th century the Black Tower, or "Schwarze Turm", was constructed at the behest of Count Albrecht III, Werner II's son. The Black Tower is the oldest standing structure remaining in Brugg's old town today.