Holy Redeemer Church stands on Lawrence Road in Ambala Cantonment, close enough to the old military and railway zone to feel like part of that world. The present church is associated with the Catholic Redemptorist community and remains an active place of worship rather than just a heritage stop.
The appeal is its setting and continuity. Visit respectfully, keep expectations modest, and combine it with the European Cemetery to understand the Christian and cantonment strand of Ambala's history.