Cassis on Saturday arrived in Isfahan, where he visited historical and cultural monuments and held talks with university directors and professors as well as Isfahan Governor General Abbas Rezaei.
In a meeting with Rezaei, Cassis said he believed that Iran-Swiss ties should be enhanced in scientific and tourism sectors.
He noted that a celebration would be held in Tehran to mark the centenary of diplomatic contacts between Tehran and Bern.
Relations between Iran and Switzerland are 100 years old and have continued since the late 19th century with the signing of a peace and trade agreement, the top diplomat added.
Referring to Switzerland's mediating role between Iran and the US, Cassis stressed that his country is trying to provide the minimums for dialogue between the two states.
During a meeting with directors of Isfahan University of Technology, he described scientific diplomacy as a way for countries to engage more in peace and reconciliation at a time when sanctions have made contacts difficult.
US harms to Iran
In Tehran on Sunday, Cassis met with Iran’s Parliament Speaker Mohammad Baqer Qalibaf who told the Swiss minister that the Iranian people will never forgive the US for the harms it has done with its sanctions.
“The Iranian nation will never forgive the damage caused by the American sanctions,” Qalibaf said.
He said Iran refuses to hold talks with the US due to Washington’s “hegemonic approach”.
The speaker urged Europe to be “independent” in its relations with Iran.
“Europe must not come under the influence of the US policies, particularly given that their (American) measures have led to instability and insecurity in the region.”
He also hailed Switzerland for its contribution to global peace and addressing humanitarian issues.
The Swiss diplomat said Iran is suffering from the economic problems caused by US sanctions.
He also expressed hope Switzerland would be able to play its role well as the government representing the interests of the US in Iran.
Press TV and Tasnim contributed to this story.