It called Kaba (or Kaaba) that is surrounded by AlMasjid Alharam (or the Grand Mosque)
For Judaism and Christianity it is Jerusalem. For Islam it is Mecca.
Islam is the religion, Muslims are the ones who follow the religion. They do not "worship" Islam, as Christians don't worship Christianity.
The islam worship in a building called the masjid
The language used in Islam worship is Arabic.
People worship in various faith for they believe in their faith, which is the same in Islam. People worship Islam because it is what they believe in. They believe in Islam as being the final revelation of God.
Muslims worship in mosques but the religion is Islam
The Islam people worship Allah at Dean Jone's house.
Islam's central focus is on the worship of Allah. Islam also focuses on spreding peace and avoiding trouble; it focuses on spreading love among people and helping others, in order to lead a fulfilling life.
The five pillars of Islam are Sahahadah, salat, Sawn, Zakat, and Hajj. For information on those Islam pillars refer to the questions and the link listed below.The Five Pillars of Islam are aspects of faith and worship that are central to the practice of the religion.
Allah
Islam is a religion, and religions are about worshipping god and a guideline to life on what is right and wrong so therefore the answer is no, Islam does not oppose worship.
Islam is a religion per God revelation of Quran to prophet Muhammad (PBUH). Followers of Islam are called Muslims. No Muslim worship Islam or Muhammad.