No. Some special buildings are specific to events. They are added as the devs see fit. If everything is available to everyone, what's so special? Some things are just not going to be in everyone's town... and that's what makes them unique. And the Speaker's Corner is a memorial to someone who passed away. It was a one-time building available to those who were around when he passed. If you weren't, there's no reason for you to have one. I know that all sounds cranky, but it's just me being frank.