Abandoned WWII Structures In Yugoslavia

A friend of mine recently showed me these awesome Sculptures in Yugoslavia!

“In the late 60’s and 70’s former Yugoslavian president Josip Broz Tito commissioned a range of sculptors and architects to create the following powerful monuments.  Constructed in honor of WWII battles and where concentration camps once existed. In the 1980s, these monuments attracted millions of visitors, especially young pioneers for their “patriotic education.” After the Republic dissolved in early 1990s, they were completely abandoned.  These fascinating pieces mostly made of concrete look futuristic and cultish”.

What do you guys think?