Recommendations on a Center City Phila. restaurant celebrating a 40th birthday

Happy to help, you can not go wrong at Amada.
Have a great time!

There are so many.
Parc is a nice french bistro, I was supposed to got here for my 40th.
I was supposed to go to Parc for my 40th (long story).
Vetri is a great celebration place.
I took my husband and our kids to Amada for his 40th.
For my parents 40th anniversary we went to the four seasons for the Sunday brunch.

Zahav - I haven't been yet, but if the reviews are anything to go by, this place could be a great fit!