ceremony sites?

i found the perfect reception site, but now i am unable to use my original ceremony site.

i am in need of suggestions within the immediate downtown area. i know there are tons of churches -- but here are the parameters:

1. must have a center aisle
2. must allow an "outside" person to perform the ceremony
3. does NOT have to be a church.
4. little to no fee
5. inside/outside doesn't matter
6. be able to accommodate 150-225 guests

any ideas?