diff --git a/GUI/ba3d/CMakeLists.txt b/GUI/ba3d/CMakeLists.txt
index 34c98ad7d03a441544ec3fe00d48147c0b809216..be45041d7efbef5f753cd2d2339406648b7ae7ee 100644
--- a/GUI/ba3d/CMakeLists.txt
+++ b/GUI/ba3d/CMakeLists.txt
@@ -22,8 +22,6 @@ set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTORCC ON)
 
 add_subdirectory (ba3d)
-add_subdirectory (showcase)
-add_subdirectory (demo)
 
 set(library_name ba3d)
 set(${library_name}_INCLUDE_DIRS ${include_dirs} PARENT_SCOPE)
diff --git a/dev-tools/sandboxes/realSpace/README.md b/dev-tools/sandboxes/realSpace/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..9e0210217fa36222d63e99d5cb6cb2b8bab26e5d
--- /dev/null
+++ b/dev-tools/sandboxes/realSpace/README.md
@@ -0,0 +1,16 @@
+[JWu 6jul20]
+
+These two demo programs were previous located in
+- GUI/ba3d/demo,
+- GUI/ba3d/showcase.
+
+I moved them out of the BornAgain source tree in order to comply
+with general practice, to accelerate compilation, and to prepare
+for tighter integration of the real-space viewer.
+
+I did not adapt the CMakeLists.txt files. Therefore, the two demo
+programs will not build without extra configuration effort.
+
+TODO:
+- Either make them build again;
+- Or remove them for good.
diff --git a/GUI/ba3d/demo/CMakeLists.txt b/dev-tools/sandboxes/realSpace/demo1/CMakeLists.txt
similarity index 100%
rename from GUI/ba3d/demo/CMakeLists.txt
rename to dev-tools/sandboxes/realSpace/demo1/CMakeLists.txt
diff --git a/GUI/ba3d/demo/demo_model.cpp b/dev-tools/sandboxes/realSpace/demo1/demo_model.cpp
similarity index 100%
rename from GUI/ba3d/demo/demo_model.cpp
rename to dev-tools/sandboxes/realSpace/demo1/demo_model.cpp
diff --git a/GUI/ba3d/demo/demo_model.h b/dev-tools/sandboxes/realSpace/demo1/demo_model.h
similarity index 100%
rename from GUI/ba3d/demo/demo_model.h
rename to dev-tools/sandboxes/realSpace/demo1/demo_model.h
diff --git a/GUI/ba3d/demo/lattice.cpp b/dev-tools/sandboxes/realSpace/demo1/lattice.cpp
similarity index 100%
rename from GUI/ba3d/demo/lattice.cpp
rename to dev-tools/sandboxes/realSpace/demo1/lattice.cpp
diff --git a/GUI/ba3d/demo/lattice.h b/dev-tools/sandboxes/realSpace/demo1/lattice.h
similarity index 100%
rename from GUI/ba3d/demo/lattice.h
rename to dev-tools/sandboxes/realSpace/demo1/lattice.h
diff --git a/GUI/ba3d/demo/main.cpp b/dev-tools/sandboxes/realSpace/demo1/main.cpp
similarity index 100%
rename from GUI/ba3d/demo/main.cpp
rename to dev-tools/sandboxes/realSpace/demo1/main.cpp
diff --git a/GUI/ba3d/demo/mainwindow.cpp b/dev-tools/sandboxes/realSpace/demo1/mainwindow.cpp
similarity index 100%
rename from GUI/ba3d/demo/mainwindow.cpp
rename to dev-tools/sandboxes/realSpace/demo1/mainwindow.cpp
diff --git a/GUI/ba3d/demo/mainwindow.h b/dev-tools/sandboxes/realSpace/demo1/mainwindow.h
similarity index 100%
rename from GUI/ba3d/demo/mainwindow.h
rename to dev-tools/sandboxes/realSpace/demo1/mainwindow.h
diff --git a/GUI/ba3d/showcase/CMakeLists.txt b/dev-tools/sandboxes/realSpace/demo2/CMakeLists.txt
similarity index 100%
rename from GUI/ba3d/showcase/CMakeLists.txt
rename to dev-tools/sandboxes/realSpace/demo2/CMakeLists.txt
diff --git a/GUI/ba3d/showcase/main.cpp b/dev-tools/sandboxes/realSpace/demo2/main.cpp
similarity index 100%
rename from GUI/ba3d/showcase/main.cpp
rename to dev-tools/sandboxes/realSpace/demo2/main.cpp
diff --git a/GUI/ba3d/showcase/mainwindow.cpp b/dev-tools/sandboxes/realSpace/demo2/mainwindow.cpp
similarity index 100%
rename from GUI/ba3d/showcase/mainwindow.cpp
rename to dev-tools/sandboxes/realSpace/demo2/mainwindow.cpp
diff --git a/GUI/ba3d/showcase/mainwindow.h b/dev-tools/sandboxes/realSpace/demo2/mainwindow.h
similarity index 100%
rename from GUI/ba3d/showcase/mainwindow.h
rename to dev-tools/sandboxes/realSpace/demo2/mainwindow.h
diff --git a/GUI/ba3d/showcase/modelLayers.cpp b/dev-tools/sandboxes/realSpace/demo2/modelLayers.cpp
similarity index 100%
rename from GUI/ba3d/showcase/modelLayers.cpp
rename to dev-tools/sandboxes/realSpace/demo2/modelLayers.cpp
diff --git a/GUI/ba3d/showcase/modelLayers.h b/dev-tools/sandboxes/realSpace/demo2/modelLayers.h
similarity index 100%
rename from GUI/ba3d/showcase/modelLayers.h
rename to dev-tools/sandboxes/realSpace/demo2/modelLayers.h
diff --git a/GUI/ba3d/showcase/modelShowcase.cpp b/dev-tools/sandboxes/realSpace/demo2/modelShowcase.cpp
similarity index 100%
rename from GUI/ba3d/showcase/modelShowcase.cpp
rename to dev-tools/sandboxes/realSpace/demo2/modelShowcase.cpp
diff --git a/GUI/ba3d/showcase/modelShowcase.h b/dev-tools/sandboxes/realSpace/demo2/modelShowcase.h
similarity index 100%
rename from GUI/ba3d/showcase/modelShowcase.h
rename to dev-tools/sandboxes/realSpace/demo2/modelShowcase.h