diff --git a/code/__defines/_planes+layers.dm b/code/__defines/_planes+layers.dm
index baff5ad5773..3000776d86e 100644
--- a/code/__defines/_planes+layers.dm
+++ b/code/__defines/_planes+layers.dm
@@ -58,6 +58,8 @@ What is the naming convention for planes or layers?
 ////////////////////////////////////////////////////////////////////////////////////////
 
 	//#define TURF_LAYER		2 //For easy recordkeeping; this is a byond define
+	#define DECALS_LAYER		2.01
+	#define OVERTURF_LAYER		2.1
 	#define DOOR_OPEN_LAYER		2.7 //Under all objects if opened. 2.7 due to tables being at 2.6
 	//#define OBJ_LAYER			3 //For easy recordkeeping; this is a byond define
 	#define DOOR_CLOSED_LAYER	3.1 //Above most items if closed
@@ -91,6 +93,7 @@ What is the naming convention for planes or layers?
 #define PLANE_CH_SPECIAL		23 //Special role icon (revhead or w/e)
 #define PLANE_CH_STATUS_OOC		24 //OOC status hud for spooks
 
+#define PLANE_MESONS			30 //Stuff seen with mesons, like open ceilings. This is 30 for downstreams.
 
 //Fullscreen overlays under inventory
 #define PLANE_FULLSCREEN		90	//Blindness, mesons, druggy, etc
diff --git a/code/__defines/mobs.dm b/code/__defines/mobs.dm
index cb0ecc37f52..c3f367b7665 100644
--- a/code/__defines/mobs.dm
+++ b/code/__defines/mobs.dm
@@ -252,4 +252,6 @@
 #define VIS_ADMIN2			17
 #define VIS_ADMIN3			18
 
-#define VIS_COUNT			18 //Must be highest number from above.
\ No newline at end of file
+#define VIS_MESONS			19
+
+#define VIS_COUNT			19 //Must be highest number from above.
\ No newline at end of file
diff --git a/code/game/area/Space Station 13 areas.dm b/code/game/area/Space Station 13 areas.dm
index 49d87ed1a66..2c75c0d255b 100755
--- a/code/game/area/Space Station 13 areas.dm	
+++ b/code/game/area/Space Station 13 areas.dm	
@@ -1645,7 +1645,6 @@ area/space/atmosalert()
 	requires_power = 1
 	always_unpowered = 1
 	dynamic_lighting = 0
-	base_turf = /turf/space
 
 	auxport
 		name = "\improper Fore Port Solar Array"
diff --git a/code/game/objects/items/weapons/RCD.dm b/code/game/objects/items/weapons/RCD.dm
index df744d1df39..8f5719b8e82 100644
--- a/code/game/objects/items/weapons/RCD.dm
+++ b/code/game/objects/items/weapons/RCD.dm
@@ -122,10 +122,7 @@
 		build_delay = deconstruct ? 50 : 20
 		build_cost =  deconstruct ? 10 : 3
 		build_type =  deconstruct ? "floor" : "wall"
-		if(F.check_destroy_override(F))
-			build_turf =  deconstruct ? destroy_floor_override_path : /turf/simulated/wall
-		else
-			build_turf =  deconstruct ? /turf/space : /turf/simulated/wall
+		build_turf =  deconstruct ? get_base_turf_by_area(F) : /turf/simulated/wall
 
 	if(!build_type)
 		working = 0
diff --git a/code/game/turfs/flooring/flooring_decals.dm b/code/game/turfs/flooring/flooring_decals.dm
index 86a7ac1a323..9c1968fd3cc 100644
--- a/code/game/turfs/flooring/flooring_decals.dm
+++ b/code/game/turfs/flooring/flooring_decals.dm
@@ -6,7 +6,7 @@ var/list/floor_decals = list()
 /obj/effect/floor_decal
 	name = "floor decal"
 	icon = 'icons/turf/flooring/decals.dmi'
-	layer = TURF_LAYER + 0.01
+	layer = DECALS_LAYER
 	var/supplied_dir
 
 /obj/effect/floor_decal/New(var/newloc, var/newdir, var/newcolour)
diff --git a/code/game/turfs/simulated.dm b/code/game/turfs/simulated.dm
index a47590d55d2..aac979ff5c7 100644
--- a/code/game/turfs/simulated.dm
+++ b/code/game/turfs/simulated.dm
@@ -62,16 +62,6 @@
 /turf/simulated/proc/initialize()
 	return
 
-/turf/simulated/proc/check_destroy_override()
-	if(destroy_floor_override) //Don't bother doing the additional checks if we don't have to.
-		var/area/my_area = get_area(src)
-//		my_area = my_area.master
-		if(is_type_in_list(my_area, destroy_floor_override_ignore_areas))
-			return 0
-		if(z in destroy_floor_override_z_levels)
-			return 1
-	return 0
-
 /turf/simulated/proc/AddTracks(var/typepath,var/bloodDNA,var/comingdir,var/goingdir,var/bloodcolor="#A10808")
 	var/obj/effect/decal/cleanable/blood/tracks/tracks = locate(typepath) in src
 	if(!tracks)
diff --git a/code/game/turfs/simulated/floor_icon.dm b/code/game/turfs/simulated/floor_icon.dm
index 4bc4911f2ea..b2992e4a2ff 100644
--- a/code/game/turfs/simulated/floor_icon.dm
+++ b/code/game/turfs/simulated/floor_icon.dm
@@ -1,5 +1,14 @@
 var/list/flooring_cache = list()
 
+var/image/no_ceiling_image = null
+
+/hook/startup/proc/setup_no_ceiling_image()
+	cache_no_ceiling_image()
+
+/proc/cache_no_ceiling_image()
+	no_ceiling_image = image(icon = 'icons/turf/open_space.dmi', icon_state = "no_ceiling", layer = OVERTURF_LAYER)
+	no_ceiling_image.plane = PLANE_MESONS
+
 /turf/simulated/floor/update_icon(var/update_neighbors)
 
 	if(lava)
@@ -84,6 +93,11 @@ var/list/flooring_cache = list()
 				continue
 			F.update_icon()
 
+	// Show 'ceilingless' overlay.
+	var/turf/above = GetAbove(src)
+	if(above && isopenspace(above) && !istype(src, /turf/simulated/floor/outdoors)) // This won't apply to outdoor turfs since its assumed they don't have a ceiling anyways.
+		overlays |= no_ceiling_image
+
 /turf/simulated/floor/proc/get_flooring_overlay(var/cache_key, var/icon_base, var/icon_dir = 0)
 	if(!flooring_cache[cache_key])
 		var/image/I = image(icon = flooring.icon, icon_state = icon_base, dir = icon_dir)
diff --git a/code/game/turfs/simulated/walls.dm b/code/game/turfs/simulated/walls.dm
index 376fb8e452a..fcd0a31479b 100644
--- a/code/game/turfs/simulated/walls.dm
+++ b/code/game/turfs/simulated/walls.dm
@@ -211,10 +211,7 @@
 /turf/simulated/wall/ex_act(severity)
 	switch(severity)
 		if(1.0)
-			if(check_destroy_override())
-				src.ChangeTurf(destroy_floor_override_path)
-			else
-				src.ChangeTurf(/turf/space)
+			src.ChangeTurf(get_base_turf_by_area(src))
 		if(2.0)
 			if(prob(75))
 				take_damage(rand(150, 250))
diff --git a/code/game/turfs/turf_changing.dm b/code/game/turfs/turf_changing.dm
index 78946ff832c..84d832b45c0 100644
--- a/code/game/turfs/turf_changing.dm
+++ b/code/game/turfs/turf_changing.dm
@@ -12,9 +12,14 @@
 // Called after turf replaces old one
 /turf/proc/post_change()
 	levelupdate()
-	var/turf/simulated/open/T = GetAbove(src)
-	if(istype(T))
-		T.update_icon()
+
+	var/turf/simulated/open/above = GetAbove(src)
+	if(istype(above))
+		above.update_icon()
+
+	var/turf/simulated/below = GetBelow(src)
+	if(istype(below))
+		below.update_icon() // To add or remove the 'ceiling-less' overlay.
 
 //Creates a new turf
 /turf/proc/ChangeTurf(var/turf/N, var/tell_universe=1, var/force_lighting_update = 0)
diff --git a/code/global.dm b/code/global.dm
index 69d5642f10a..3bf111ef4fd 100644
--- a/code/global.dm
+++ b/code/global.dm
@@ -38,17 +38,6 @@ var/changelog_hash		= ""
 var/game_year			= (text2num(time2text(world.realtime, "YYYY")) + 544)
 var/round_progressing = 1
 
-	//On some maps, it does not make sense for space turf to appear when something blows up (e.g. on an asteroid colony, or planetside)
-	//The turf listed here is what is created after ex_act() and other tile-destroying procs are called on a turf that
-	//is not already in a blacklisted area.
-	//Set to 1 to enable it.
-var/destroy_floor_override = 1
-	//Below is the path of turf used in place of space tiles.
-var/destroy_floor_override_path = /turf/simulated/mineral/floor
-	//A list of z-levels to apply the override to.  This is so z-levels like tcomms work as they did before.
-var/list/destroy_floor_override_z_levels = list(1,4,5)
-	//Some areas you may want to not turn into the override path you made above, like space or the solars.
-var/list/destroy_floor_override_ignore_areas = list(/area/space,/area/solar,/area/shuttle)
 var/master_mode       = "extended" // "extended"
 var/secret_force_mode = "secret"   // if this is anything but "secret", the secret rotation will forceably choose this mode.
 
diff --git a/code/modules/clothing/glasses/glasses.dm b/code/modules/clothing/glasses/glasses.dm
index f7806ad2458..87aef448514 100644
--- a/code/modules/clothing/glasses/glasses.dm
+++ b/code/modules/clothing/glasses/glasses.dm
@@ -70,7 +70,7 @@ BLIND     // can't see anything
 	origin_tech = list(TECH_MAGNET = 2, TECH_ENGINEERING = 2)
 	toggleable = 1
 	vision_flags = SEE_TURFS
-	enables_planes = (VIS_FULLBRIGHT)
+	enables_planes = list(VIS_FULLBRIGHT, VIS_MESONS)
 
 /obj/item/clothing/glasses/meson/New()
 	..()
diff --git a/code/modules/mob/mob_planes.dm b/code/modules/mob/mob_planes.dm
index 25c494c2e80..5f7beceafe6 100644
--- a/code/modules/mob/mob_planes.dm
+++ b/code/modules/mob/mob_planes.dm
@@ -33,6 +33,8 @@
 	plane_masters[VIS_D_COLORBLIND] = new /obj/screen/plane_master/colorblindness					//Colorblindness (affects world)
 	plane_masters[VIS_D_COLORBLINDI]= new /obj/screen/plane_master/colorblindness/items 			//Colorblindness (items in HUD, subplane of above, don't toggle)
 
+	plane_masters[VIS_MESONS]		= new /obj/screen/plane_master{plane = PLANE_MESONS} 			//Meson-specific things like open ceilings.
+
 	..()
 
 /datum/plane_holder/Destroy()
diff --git a/code/modules/multiz/turf.dm b/code/modules/multiz/turf.dm
index 636918c5e8a..9d07df45081 100644
--- a/code/modules/multiz/turf.dm
+++ b/code/modules/multiz/turf.dm
@@ -52,6 +52,7 @@
 	below = GetBelow(src)
 	turf_changed_event.register(below, src, /turf/simulated/open/update_icon)
 	levelupdate()
+	below.update_icon() // So the 'ceiling-less' overlay gets added.
 	for(var/atom/movable/A in src)
 		A.fall()
 	OS_controller.add_turf(src, 1)
diff --git a/icons/turf/open_space.dmi b/icons/turf/open_space.dmi
index 8c5810fffc6..4b3ba1fb671 100644
Binary files a/icons/turf/open_space.dmi and b/icons/turf/open_space.dmi differ
diff --git a/maps/northern_star/northern_star.dm b/maps/northern_star/northern_star.dm
index fe95bbaeb64..ece26300960 100644
--- a/maps/northern_star/northern_star.dm
+++ b/maps/northern_star/northern_star.dm
@@ -7,6 +7,7 @@
 	#include "polaris-5.dmm"
 
 	#include "northern_star_defines.dm"
+	#include "northern_star_areas.dm"
 	#include "northern_star_shuttles.dm"
 
 	#define USING_MAP_DATUM /datum/map/northern_star
diff --git a/maps/northern_star/northern_star_areas.dm b/maps/northern_star/northern_star_areas.dm
new file mode 100644
index 00000000000..836ebc5aaa1
--- /dev/null
+++ b/maps/northern_star/northern_star_areas.dm
@@ -0,0 +1,5 @@
+// Eventually we should move all the Northern Star-centric areas here so future maps can have a less polluted area list but that involves a lot of work and headaches.
+
+// Solars are 'sticking out' from the rock and so shouldn't have rock underneath them.
+/area/solar
+	base_turf = /turf/space
\ No newline at end of file