In Romans 12:1 we are told to sacrifice our bodies, a living sacrifice. This is our reasonable (or true and proper) “service”. Service is also translated correctly worship. So, a Sunday Service is a time of worship. However, in verse 2 Paul tells us how to do the sacrifice.
When we change our minds to obey God, leaving worldly things and performing God’s will, it’s worship. So, the place of worship is in our own bodies. Many people have been misled into believing that you must be in a particular place to worship. It’s better said you must be in a particular frame of mind to worship.