Conrad was crowned king of Germany by Archbishop Aribo in Mainz Cathedral on September 8, 1024 at the age of 34. To mark his election, Conrad commissioned the construction of Speyer Cathedral, near his ancestral home of Worms. Construction began in 1030. Archbishop Aribo, as archbishop of Mainz, was already the chancellor of Germany. Conrad wanted to reward the archbishop for his electoral support, so he made Aribo chancellor of Italy as well, making Aribo the second most powerful man in the Holy Roman Empire as the imperial chancellor.