diff --git a/src/pg_rad/simulator/engine.py b/src/pg_rad/simulator/engine.py
index 7b8c950..f22305c 100644
--- a/src/pg_rad/simulator/engine.py
+++ b/src/pg_rad/simulator/engine.py
@@ -34,6 +34,7 @@ class SimulationEngine:
 
         return SimulationOutput(
             name=self.landscape.name,
+            size=self.landscape.size,
             count_rate=count_rate_results,
             sources=source_results
         )
diff --git a/src/pg_rad/simulator/outputs.py b/src/pg_rad/simulator/outputs.py
index 9aca77e..404e742 100644
--- a/src/pg_rad/simulator/outputs.py
+++ b/src/pg_rad/simulator/outputs.py
@@ -27,5 +27,6 @@ class SourceOutput:
 @dataclass
 class SimulationOutput:
     name: str
+    size: tuple
     count_rate: CountRateOutput
     sources: List[SourceOutput]