Antrim on Wikipedia.
 

All Saints (CoI). © Alastair Cameron. Link.

First Antrim Congregation (Presbyterian). © Alastair Cameron. Link.

Unidentified Church. And another. Can you give either a name? Both © Alastair Cameron. Thanks to Mark Finlay who has advised that the former is Antrim Masonic Hall, and the latter was the High Street Presbyterian Church. The congregation moved to another church building some years ago.