1999
Stabilization and conservation of stone masonry and plaster, mid-12th century
Castle
1999
Town hall and museum centrally located on Siena's former market square, the Campo, the venue for the famous horse races; construction start in the 13th century
Monument
Laser Cleaning
1996 - 2001
Granite architecture with sculptures, tracery, pillars and portals of shell-limestone
Church
1998
Facade of main gate and nave, columns, stairs and portal made of leitha limestone, 1889
Church