Obelisks obsolete with Calender?

[LordTerror]

1. You cannot build the structure anymore.

2. Existing structures lose all of their bonuses EXCEPT their culture benefit. This includes great person points.

Correct. Thanks for point out the loss of GPP, I didn't notice that until now.

The exception to this is the ability to build missionaries.

Stonehenge goes obsolete with Calendar, just as do obelisks, so it's effect of "provides an obelisk for free in every city" disappears then too.

Correct.

If obelisks persist after Calendar

"Phantom" ones dissipear.
"Real" ones go obsolete (since they produce culture, there is no change to them).

We're saying the following happens once calendar is researched:

Without Stonehenge:
1. Obelisks will remain and continue to produce their cultural bonus (they don't have any other bonuses to go obsolete).
2. You cannot build Obelisks anymore anywhere.

With Stonehenge:
1. Obelisks built without the help of Stonehenge will remain and continue to produce their cultural bonus.
2. Obelisks created by Stonehenge's bonus disappear from the city (and certainly don't produce culture therefore)
3. You cannot build Obelisks anymore anywhere.

Correct!!