diff --git a/content/portfolio/object-oriented-ontology.de.md b/content/portfolio/object-oriented-ontology.de.md
new file mode 100644
index 0000000..08e9dc6
--- /dev/null
+++ b/content/portfolio/object-oriented-ontology.de.md
@@ -0,0 +1,7 @@
+---
+title: "object oriented ontology"
+slug: "object-oriented-ontology"
+date: 2026-01-15
+thumbnail: "/img/ooo/thumbnail.webp"
+video: "/media/ooo.mp4"
+---
diff --git a/content/portfolio/object-oriented-ontology.md b/content/portfolio/object-oriented-ontology.md
new file mode 100644
index 0000000..08e9dc6
--- /dev/null
+++ b/content/portfolio/object-oriented-ontology.md
@@ -0,0 +1,7 @@
+---
+title: "object oriented ontology"
+slug: "object-oriented-ontology"
+date: 2026-01-15
+thumbnail: "/img/ooo/thumbnail.webp"
+video: "/media/ooo.mp4"
+---
diff --git a/static/img/hotel-national/entrance-model.webp b/static/img/hotel-national/entrance-model.webp
index 5bc2043..00a116b 100644
Binary files a/static/img/hotel-national/entrance-model.webp and b/static/img/hotel-national/entrance-model.webp differ
diff --git a/static/img/hotel-national/plan-full-ground-floor.webp b/static/img/hotel-national/plan-full-ground-floor.webp
new file mode 100644
index 0000000..ecdc798
Binary files /dev/null and b/static/img/hotel-national/plan-full-ground-floor.webp differ
diff --git a/static/img/hotel-national/plan-ground-floor.webp b/static/img/hotel-national/plan-ground-floor.webp
deleted file mode 100644
index 17c96b1..0000000
Binary files a/static/img/hotel-national/plan-ground-floor.webp and /dev/null differ
diff --git a/static/img/hotel-national/plan-intervention-detail.webp b/static/img/hotel-national/plan-intervention-detail.webp
new file mode 100644
index 0000000..9658f61
Binary files /dev/null and b/static/img/hotel-national/plan-intervention-detail.webp differ
diff --git a/static/img/hotel-national/reading-room-model.webp b/static/img/hotel-national/reading-room-model.webp
new file mode 100644
index 0000000..69fa003
Binary files /dev/null and b/static/img/hotel-national/reading-room-model.webp differ
diff --git a/static/img/hotel-national/staircase-model.webp b/static/img/hotel-national/staircase-model.webp
new file mode 100644
index 0000000..133bab8
Binary files /dev/null and b/static/img/hotel-national/staircase-model.webp differ
diff --git a/static/img/ooo/thumbnail.webp b/static/img/ooo/thumbnail.webp
new file mode 100644
index 0000000..41f55ce
Binary files /dev/null and b/static/img/ooo/thumbnail.webp differ