Muslims make up two-thirds of the population in the town of 30,000 and Christian influence has been receding steadily.

The issue of interfaith relations will be high on the pontiff's agenda during his May 8-15 tour, which includes several meetings with Muslim leaders.

Among many Muslims here resentment is still festering from 2006, when Benedict linked Islam and violence. The pope quoted a Medieval text that characterized some of the teachings of Muhammad as "evil and inhuman," particularly "his command to spread by the sword the faith."

The calligrapher said he took on the mission, in part, because he wanted to send a conciliatory message and distance himself from extremists.