Muslims go to Mosques and Christians go to churches.
Muslims don't worship any building. Even, the Kaaba (that is the most sacred Islamic building) is not worshiped by Muslims but respected and honored by Muslims. If you wish to read about places where Muslims worship (both houses of worship and sacred sites) read the Related Question below.
There are three places of worship where Muslims should go: Makkah, Madina and Masjid Al Aqsa in Jerusulum
no one knows for sure?
I presume you mean Muslims. The place of worship for Muslims is called a Masjid, also called a Mosque in some places.
Masjid-ul-Haram (the Ka'aba) in Makka Mukarrama, Masjid-un-Nabi in Madina Munawwara, and Masjid-i-Aqsa in Jerusalem are the most sacred places of worship for the Muslims.
Muslims can worship anywhere, at home, in the shops, in the open streets or garden, airports, railway stations, as long as it is a clean place. Congregational prayers are held in the place of worship called the Masjid.h
Where you worship depends on your religion, not your nationality. People in Poland worship in many different types of places. Most Christians in Poland worship in a church, because Christians worship in a church. Most Jews in Poland worship in a temple or synogogue, because that is where Jews worship. Muslims in Poland worship in Mosques, because that is where Muslims worship. Many religions (including Christians, Jews, and Muslims) also worship at home.
Yes, Muslims go to the Mosq on Fridays
No. Synagogues are Jewish houses of worship. Muslims pray in a mosque.
Church for Christians, Synagogue for Jewish, and Mosque for Muslims
Mosques and churches are both places of worship Mosques have dome on top and Muslims worship there. Churches have either a spire or tower on top and christians worship there.