Dear ...
We are proud to announce the opening of the new __(type of pavilion)__ at __(location)__. The official opening will be on __(date)__. This new pavilion offers an extensive exhibition of __(briefly describe will be on display in the pavilion)__. It is anticipated that people __(from all walks of life/from far and wide/internationally/etc.)__ will come to visit it, not only because of the spectacular displays offered, but because of the educational value it offers as well.
In celebration of this grand opening, we will be __(briefly describe what you will be doing)__.
Some of the festivities will include __(briefly describe what will be included)__.
Date:
Time:
Place:
We invite you to join us in the celebration of the grand opening of the __(name of pavilion)__. Feel free to bring your family and friends. We look forward to seeing you there!
Yours truly,