Tuning The Tower, in Pictures

Carillon engineers Dirk Fransen (left) and Theo van der Linden, both of The Netherlands, adjust the Millennium Carillon in Naperville on June 9 prior to this week's Congress of the Guild of Carillonnuers in North America. (Danielle Gardner/Naperville Sun Newspaper Staff Photographer)

Dirk Fransen, a carillon engineer from The Netherlands, adjusts the instruments in the tower of the Millennium Carillon in Naperville on June 9. The adjustments to the carillon are completed once a year, and this year's work was done just days before the start of the 68th Congress of the Guild of Carillonneurs in North America, which is being held this week in Naperville. This is Fransen's third trip to Naperville to adjust the Millennium Carillon. (Danielle Gardner/Naperville Sun Newspaper Staff Photographer)

Dirk Fransen (left) and Theo van der Linden take a coffee break in the Carillonneur?s Cabin as they adjust the instruments in the tower of the Millennium Carillon in Naperville on June 9. (Danielle Gardner/Naperville Sun Newspaper Staff Photographer)

Dirk Fransen adjusts the instruments in the tower of the Millennium Carillon in Naperville on June 9. Fransen has been a carillon engineer for about six years. (Danielle Gardner/Naperville Sun Newspaper Staff Photographer)

Dirk Fransen (left) and Theo van der Linden adjust the instruments in the tower of the Millennium Carillon in Naperville on June 9. The men work without ropes as they climb among the bells. (Danielle Gardner/Naperville Sun Newspaper Staff Photographer)

The 68th Congress of the Guild of Carillonneurs in North America is being held this week in Naperville. A crew from The Netherlands was in town June 9 to adjust Millennium Carillon in Naperville. (Danielle Gardner/Naperville Sun Newspaper Staff Photographer)