As a child, Saint Martin travelled with his parents from Savaria to Ticinium (Pavia) in Italy along the Amber Road, which can still be seen on the reed bed. This Roman road led not far from a Roman building on a hill rising from the reeds. The patron of the rotunda, fortified with a watchtower and built on the church hill of Nádasd in the 11th century, was Bishop Saint Martin. The fortified round church, which stood in the centre of ten villages, was the parish church of Nádasd and the clan church of the Nádasdy family. In the 12th century a long nave was added to the west. The rotunda church was demolished in 1888. Its foundations were excavated and reconstructed in 2003. Bishop Saint Martin has been the patron saint of Nádasd for a thousand years.