St. Michael's Church is a double-choir
basilica with two tripartite
transepts at either end of the nave and a square tower at each
crossing. Along with these large towers at the crossings, there are four other tall and narrow towers attached to the small sides of the two transepts. The eastern choir featured three apses, and the west
choir is emphasized by a single apse rising high over an elaborate cross-vaulted
crypt with an
ambulatory.
Nikolaus Pevsner wrote that St. Michael's "is the earliest surviving example of a truly Romanesque exterior." The ground plan of the building follows a geometrical conception, in which the square of the transept crossing in the ground plan constitutes the key measuring unit for the entire church. The square units are defined by the
alternation of columns and piers. Pevsner described this as a "more thorough 'metrical system'" than found in any prior Romanesque architecture. During his time as Otto's tutor, it is recorded that Bernward visited Rome and lived there for a time. During this time abroad, Bernward would have taken notice to the Early Christian Basilicas in Rome which were notorious for their unexciting interiors at this time. The ceiling of the church is decorated with a painting, 27.6 m long and 8.7 m wide, depicting the
Tree of Jesse, the ancestral line of Jesus. This artwork, created around 1130, was created using over 1,300 oak planks and was heavily restored to its current form in 2010. These incredibly detailed doors depict 16 scenes in total and begin with scenes on the left with stories of Genesis and move into New Testament depictions on the right. The doors were crafted in this way to allow the viewer the opportunity to see the decline and Holy Redemption of humanity through Christ's resurrection. Along with this, many of the stories depicted in the doors were almost certainly drawn from works Bernward himself encountered on his various travels. File:Hildesheim-St Michaels Church.interior.01.JPG|Interior of St. Michael's St. preceding restoration in 2005 File:Holzdecke der Michaelis Kirche in Hildesheim.jpg|The wooden ceilings found in Hildesheim along with the wooden ceilings of Zillis (Switzerland) and Dädesjö (Sweden), are some of the few panel paintings of the high Middle Ages that have survived. File:St Michael Hildesheim Mittelschiff.jpg|Interior of St. Michael's after the completion of the restoration carried out between 2005 and 2010 ==Measurements==