diff --git a/ratinabox/Environment.py b/ratinabox/Environment.py
index 34286f1..2f99cce 100644
--- a/ratinabox/Environment.py
+++ b/ratinabox/Environment.py
@@ -96,6 +96,19 @@ def __init__(self, params={}):
             self.D = 1
             self.extent = np.array([0, self.scale])
             self.centre = np.array([self.scale / 2, self.scale / 2])
+            if self.boundary is not None:
+                warnings.warn(
+                    "You have passed a boundary into a 1D environment. This is ignored."
+                )
+                self.boundary = None
+
+            for feature_for_2D_only in ["holes", "walls"]:
+                if len(getattr(self, feature_for_2D_only)) > 0:
+                    warnings.warn(
+                        f"You have passed {feature_for_2D_only} into a 1D environment. "
+                        "This is ignored."
+                    )
+                    setattr(self, feature_for_2D_only, list())
 
         elif self.dimensionality == "2D":
             self.D = 2
@@ -381,6 +394,7 @@ def plot_environment(
         ax=None,
         gridlines=False,
         autosave=None,
+        plot_objects=True,
         **kwargs,
     ):
         """Plots the environment on the x axis, dark grey lines show the walls
@@ -409,6 +423,24 @@ def plot_environment(
             ax.set_xticks([extent[0], extent[1]])
             ax.set_xlabel("Position / m")
 
+            # plot objects, if applicable
+            if plot_objects:
+                object_cmap = matplotlib.colormaps[self.object_colormap]
+                for i, object in enumerate(self.objects["objects"]):
+                    object_color = object_cmap(
+                        self.objects["object_types"][i]
+                        / (self.n_object_types - 1 + 1e-8)
+                    )
+                    ax.scatter(
+                        object[0],
+                        0,
+                        facecolor=[0, 0, 0, 0],
+                        edgecolors=object_color,
+                        s=10,
+                        zorder=2,
+                        marker="o",
+                    )
+
         if self.dimensionality == "2D":
             extent, walls = self.extent, self.walls
             if fig is None and ax is None:
@@ -476,10 +508,8 @@ def plot_environment(
                     zorder=2,
                 )
 
-            # plot objects if there isn't a kwarg setting it to false
-            if "plot_objects" in kwargs and kwargs["plot_objects"] == False:
-                pass
-            else:
+            # plot objects, if applicable
+            if plot_objects:
                 object_cmap = matplotlib.colormaps[self.object_colormap]
                 for i, object in enumerate(self.objects["objects"]):
                     object_color = object_cmap(