This week’s crazy building is the Makedonium Monument in Krusevo, Macedonia.
The bizarre-looking space-age structure was built in the 1970s to commemorate the Ilinden Uprising of 1903. Macedonians revolted against the Ottoman Empire in a fight for independence. Although the uprising ultimately failed, the Ottoman Empire dissolved just a few years later, and eventually the Republic of Macedonia was formed.
And what better way to remember the event than a giant, spiky-looking concrete ball?
Sitting nearly a mile above the town of Krusevo, the monument has been compared in appearance to a heart valve, a virus and even a cauliflower. But it’s so iconic in Macedonia that it’s even featured on their 10,000 Denari bill.