 Complete the following phrase:  These mosaics are commonly attributed to the paver Alois Krems, who lived in Freiburg in 1858. His work was inspired by pavings he had seen during his time as an apprentice in southern France. In the late 19th century, major road reconstruction works took place in Freiburg, during which the Bächle were relocated from the centers to the edges of the roads. As a result, several roads in different parts of town Wiehre, Herden, Neuburg were repaved with cobblestone between 1901 and 1911. The new basalt pavements are streaked with veins of white marble. Furthermore, they feature the year in which they were constructed. Even though the bombing of Freiburg on 