The church was built to a standard design in the shape of a three-nave, initially flat-roofed basilica with a rhythmical ("Rhenish") alternation of piers and columns.
Amongst the furnishings of the collegiate church were the bronze Krodo Altar and Imperial Throne of Goslar from the 11th century that have survived to the present day.
The town of Goslar was first mentioned under the rule of Emperor Otto II in 979; due to the nearby silver mines of Rammelsberg, it quickly evolved into one of the most important medieval cities in the emerging German kingdom.
The church was dedicated to the apostles Simon and Jude whose feast day on October 28 fell on the birthday of Emperor Henry III, who often stayed in Goslar.
At Pentecost 1063 the Goslar Precedence Dispute escalated in the church, when on the occasion of a Hoftag diet in the presence of the young king Henry IV an armed conflict arose around the seating order at the vespers between Bishop Hezilo of Hildesheim and the Abbot of Fulda.
[5] After the mediatisation of the former free imperial city of Goslar, by 1819 the collegiate church fell into ruin and, due to a lack of funding for its repair, was sold at auction to a craftsman who used it as "quarry" and had largely demolished it by 1822.
In the summer of 2018, a bottled typewritten message dated March 26, 1930 was discovered in the roof of the cathedral, signed by four roofers who bemoaned the economic state of the country.