diff --git a/kdtree-tester-cli/src/ray_bouncer.rs b/kdtree-tester-cli/src/ray_bouncer.rs
index 9a96c4a..03b2e87 100644
--- a/kdtree-tester-cli/src/ray_bouncer.rs
+++ b/kdtree-tester-cli/src/ray_bouncer.rs
@@ -27,8 +27,8 @@ impl RayBouncer {
         ray: &Ray,
         t_range: RangeInclusive<f32>,
     ) -> Option<KdIntersection> {
-        let indices = 0u32..self.scene.geometries.len() as u32;
-        intersect_closest_geometry(&self.scene.geometries, indices, ray, t_range)
+        let indices = 0u32..self.scene.geometries().len() as u32;
+        intersect_closest_geometry(self.scene.geometries(), indices, ray, t_range)
     }
 
     fn checked_ray_intersect(
@@ -38,7 +38,7 @@ impl RayBouncer {
     ) -> CheckedIntersection {
         let kdtree = self
             .kdtree
-            .intersect(&self.scene.geometries, ray, t_range.clone());
+            .intersect(self.scene.geometries(), ray, t_range.clone());
         let reference = self.reference_ray_intersect(ray, t_range);
         CheckedIntersection {
             ray: ray.clone(),
@@ -76,7 +76,7 @@ impl RayBouncer {
 
         let incoming_fails = self
             .scene
-            .lights
+            .lights()
             .iter()
             .filter_map(|light| {
                 let shadow_ray = Ray::between(point_above, sample_light(light, &mut rng));
diff --git a/kdtree-tester-cli/src/ray_tester.rs b/kdtree-tester-cli/src/ray_tester.rs
index da4185e..8ebc4a1 100644
--- a/kdtree-tester-cli/src/ray_tester.rs
+++ b/kdtree-tester-cli/src/ray_tester.rs
@@ -19,10 +19,10 @@ pub(crate) fn kdtree_ray_tester(
     let scene = Scene::read_obj_file_with_print_logging(&input);
 
     println!("Building kdtree...");
-    let kdtree = build_kdtree(&scene.geometries, &sah);
+    let kdtree = build_kdtree(scene.geometries(), &sah);
 
     println!("Testing up to {} rays...", size.x * size.y * bounces);
-    let camera = Pinhole::new(scene.cameras[0].clone(), size.as_uvec2());
+    let camera = Pinhole::new(scene.cameras()[0].clone(), size.as_uvec2());
     let bouncer = RayBouncer {
         scene,
         kdtree,
diff --git a/pathtracer-cli/src/main.rs b/pathtracer-cli/src/main.rs
index 8faf20e..9a4b48a 100644
--- a/pathtracer-cli/src/main.rs
+++ b/pathtracer-cli/src/main.rs
@@ -159,7 +159,7 @@ fn main() {
 
     println!("Building kdtree...");
     let kdtree = build_kdtree(
-        &scene.geometries,
+        scene.geometries(),
         &SahCost {
             traverse_cost: args.traverse_cost,
             intersect_cost: args.intersect_cost,
@@ -172,7 +172,7 @@ fn main() {
         "Rendering {} px image with {} thread(s) and {} total iteration(s)...",
         args.size, args.threads, total_iterations,
     );
-    let camera = Pinhole::new(scene.cameras[0].clone(), args.size.as_uvec2());
+    let camera = Pinhole::new(scene.cameras()[0].clone(), args.size.as_uvec2());
     let pathtracer = Pathtracer {
         max_bounces: args.max_bounces,
         scene,
diff --git a/pathtracer-gui/src/main.rs b/pathtracer-gui/src/main.rs
index c1ae033..107e82b 100644
--- a/pathtracer-gui/src/main.rs
+++ b/pathtracer-gui/src/main.rs
@@ -30,7 +30,7 @@ fn main() {
 
     println!("Building kdtree...");
     let kdtree = build_kdtree(
-        &scene.geometries,
+        scene.geometries(),
         &SahCost {
             traverse_cost: args.traverse_cost,
             intersect_cost: args.intersect_cost,
@@ -45,7 +45,7 @@ fn main() {
     };
 
     miniquad::start(Conf::default(), move || {
-        let camera = pathtracer.scene.cameras[0].clone();
+        let camera = pathtracer.scene.cameras()[0].clone();
         Box::new(Stage::new(pathtracer, camera))
     });
 }
diff --git a/scene/src/lib.rs b/scene/src/lib.rs
index 7b950db..33a4fbc 100644
--- a/scene/src/lib.rs
+++ b/scene/src/lib.rs
@@ -45,12 +45,12 @@ struct TriangleProperties {
 }
 
 pub struct Scene {
-    pub geometries: Vec<Geometry>,
+    geometries: Vec<Geometry>,
     properties: Vec<TriangleProperties>,
     materials: Vec<Material>,
-    pub cameras: Vec<Camera>,
-    pub lights: Vec<SphericalLight>,
-    pub environment: Vec3,
+    cameras: Vec<Camera>,
+    lights: Vec<SphericalLight>,
+    environment: Vec3,
 }
 
 fn blend_from_mtl(image_directory: &Path, material: &mtl::Material) -> Material {
@@ -182,6 +182,26 @@ impl Scene {
         scene
     }
 
+    #[inline]
+    pub fn geometries(&self) -> &[Geometry] {
+        &self.geometries
+    }
+
+    #[inline]
+    pub fn cameras(&self) -> &[Camera] {
+        &self.cameras
+    }
+
+    #[inline]
+    pub fn lights(&self) -> &[SphericalLight] {
+        &self.lights
+    }
+
+    #[inline]
+    pub fn environment(&self) -> Vec3 {
+        self.environment
+    }
+
     #[inline]
     pub fn get_material(&self, index: u32) -> &Material {
         &self.materials[self.properties[index as usize].material_index]
diff --git a/tracing/src/pathtracer.rs b/tracing/src/pathtracer.rs
index 42b7c20..a855244 100644
--- a/tracing/src/pathtracer.rs
+++ b/tracing/src/pathtracer.rs
@@ -28,7 +28,7 @@ impl Pathtracer {
         for bounce in 1..=self.max_bounces {
             let intersection = self
                 .kdtree
-                .intersect(&self.scene.geometries, &ray, 0.0..=f32::MAX);
+                .intersect(self.scene.geometries(), &ray, 0.0..=f32::MAX);
             ray_logger
                 .log_ray(
                     &intersection
@@ -39,7 +39,7 @@ impl Pathtracer {
                 )
                 .unwrap();
             if intersection.is_none() {
-                return accumulated_radiance + accumulated_transport * self.scene.environment;
+                return accumulated_radiance + accumulated_transport * self.scene.environment();
             }
             let intersection = intersection.unwrap();
             let intersection_index = intersection.index;
@@ -60,14 +60,14 @@ impl Pathtracer {
 
             let incoming_radiance: Vec3 = self
                 .scene
-                .lights
+                .lights()
                 .iter()
                 .map(|light| {
                     // TODO: Offset should depend on incoming direction, not only surface normal.
                     let shadow_ray = Ray::between(point_above, sample_light(light, rng));
                     let intersection =
                         self.kdtree
-                            .intersect(&self.scene.geometries, &shadow_ray, 0.0..=1.0);
+                            .intersect(self.scene.geometries(), &shadow_ray, 0.0..=1.0);
                     ray_logger
                         .log_shadow(&shadow_ray, bounce, intersection.is_some())
                         .unwrap();