Brugg

Vindonissa (today Windisch, adjacent to Brugg) was the only permanent Roman legionary camp in Switzerland, housing approximately 6,000 soldiers. Three legions were stationed here in succession: Legio XIII Gemina, Legio XXI Rapax, and Legio XI Claudia. The Vindonissa Museum in Brugg displays the largest collection of Roman writing tablets anywhere -- 612 pine-wood tablets found in rubbish dumps, each a wax-covered diptych on which soldiers wrote letters, receipts, and legal documents with a stylus.

Brugg sits at the narrowest point of the Aare in the Swiss Mittelland, where the river squeezes through a 200-metre gorge and narrows to just 12 metres -- the only spot between Lake Thun and the Rhine where the Aare could be crossed with a single log. Around 1020-1030, nobleman Radbot and Bishop Werner of Strasbourg built Habsburg Castle on the Wuelpelsberg hill, 3 km southwest of Brugg. Radbot's grandson Otto II first called himself 'Count of Habsburg.' In 1273, his descendant Rudolf was elected King of the Romans.

The Schwarze Turm (Black Tower) is Brugg's landmark and oldest building, built in the last quarter of the 12th century, probably by Count Albrecht III of Habsburg. It served as a fortified bridgehead guarding the narrow Aare crossing. Builders reused stone from the ruins of Vindonissa, which for centuries led people to believe the tower was of Roman origin -- this misconception was corrected only in the 19th century. The tower is 25.70 metres tall with a 9.30 by 9.30 metre ground plan.

Just downstream from Brugg, the three great rivers from the Alps -- Aare, Reuss, and Limmat -- unite in a single spot called the 'Wasserschloss der Schweiz' (Water Castle of Switzerland). Their combined discharge averages 555 cubic metres per second, draining water from 40% of Switzerland's total area. In 1989, Canton Aargau protected this floodplain landscape; it is designated a wetland of national importance and is rich in biodiversity.

On 1 May 1308, King Albrecht I of Habsburg was murdered by his nephew Johann von Schwaben near Windisch. His widow Elisabeth founded Koenigsfelden Monastery at the murder site around 1310-1311. Their daughter Agnes of Hungary presided over its golden age from 1317 to 1364, commissioning magnificent stained glass windows created between 1320-1360. These windows are considered, together with those of Bern Minster, the most valuable medieval stained glass in Switzerland. The windows were donated by the murdered king's family members, whose images appear in the panels.

The amphitheatre of Vindonissa was the largest Roman amphitheater in Switzerland: outer dimensions 111 by 99 metres, arena 64 by 52 metres, seating for approximately 11,000 spectators. It was originally built in wood, later rebuilt in stone with three concentric elliptical walls around 50 AD. The final legion, Legio XI Claudia, was withdrawn by Emperor Trajan to the Danube region in 101 AD, leaving the camp and its amphitheatre empty.

Brugg's Lateinschule (Latin School) is a heritage site of national significance: the northern part dates from 1515 (late Gothic), the southern from 1638/40 (Baroque). The east facade features architectural-allegorical murals by Rudolf Schwerter from 1640. The school served as a preparatory school for the theological academy in Bern, funded by income from the dissolved Koenigsfelden monastery. It produced so many pastors and scholars that Brugg earned the nickname 'Prophetenstaedtchen' (Little Prophet Town).

The Paul Scherrer Institute (PSI), located near Brugg, is the largest research institute for natural and engineering sciences in Switzerland. Named after physicist Paul Scherrer (1890-1969), who co-developed the Debye-Scherrer method and helped establish CERN. PSI employs 2,300 people and hosts 3,000 visiting researchers annually. It operates the Swiss Light Source (synchrotron), SwissFEL (X-ray laser), and Switzerland's only proton therapy facility for precise cancer treatment.