The president of Hungary, László Sólyom, has thanked Switzerland for its support of Hungarian students during the country's 1956 uprising against the Soviet Union.
Sólyom was speaking at the Federal Institute of Technology in Zurich on Thursday, where he laid a memorial plaque.
He had arrived at Zurich airport earlier in the day for the start of a two-day state visit.
Switzerland accepted refugees from the eastern European state, including more than 500 students, after Soviet tanks rolled into Budapest in 1956. Of those students, 191 studied at Zurich's Federal Institute.
Sólyom will spend the rest of the day in the capital Bern before moving to the city of Geneva and canton Valais on Friday.