SARAH Kersey learned that Muslims view Jesus as a prophet, while MP Carolyn Harris found out the Koran is considered the third of the holy books along with the Bible and the Torah.
Visitors to Swansea Mosque also learned more about the importance of Friday's Jummah prayer, about the food bank it runs, and the latest plans to move into a new building across the way on St Helen's Road.
The mosque was one of two in Swansea that opened their doors today as part of a nationwide event organised by the Muslim Council of Britain.
Mrs Harris, MP for Swansea East, said: "I think it is a wonderful idea. It dispels a lot of myths."
She said the mosque was no different to any other community in wanting to help its members and other people.
"I had a wonderful welcome, and I learned so much," added the Labour MP. "Obviously there are cultural differences, but that is the same in every religion."
Miss Kersey has recently moved from London to Swansea and wanted to get to know more about the wider community.
"I think it is great that they (the mosque) are being so open," she said.
Also a relative newcomer from London is Abdus Salam Azadi, who was appointed head imam and centre director at Swansea Mosque.
He leads prayers and supervises the mosque's education projects and public services. One of three imams at the St Helen's Road venue, he is also part of the senior management team which meets weekly to discuss matters such as the needs of the community and the Friday sermons.
Mr Azadi said he felt at home in the city and had not encountered hostility.