Sign
An unlocked or open front door.
It is called the Narthex.
Pylon sign?
Sanctuary
A church tower is called a steeple. It is often a tall structure, typically located at the front of the church building, and may contain bells or a clock.
A cross is the sign for a church
at the front of the church normally in front of an cross
Choirs in a church typically sit in a designated area called the choir loft, which is usually located at the front or side of the church near the altar. In some churches, the choir may also be seated in the front rows of the congregation or in a balcony.
There is no sacred sign mentioned in The Bible. If a church has a sacred sign then it is something people have invented.
Pulpit is a speakers' stand in the front of a church. Typically, the one on the left (as viewed by the congregation) is called the pulpit. Since the Gospel lesson is often read from the pulpit, the pulpit side of the church is sometimes called the gospel side.
No. The sanctuary is where the congregation gathers for worship service. The entry hall (front?) is called the "vestibule." The area where the congregation sits is called the "nave." The area where the sermon is delivered is called the "alter," or "pulpit," depending on the design of the church. Sometimes there is a pulpit structure on the alter, and sometimes the sermon is delivered from a lecturn. Of course there are many different churches and many different designs. But this is what we called the areas in the church I grew up in.
No, it is not permissible to park in front of a no parking sign.