This is a Macroblock Pack i made for our TotD Map (SHURIMA)
To use this set, download it, unzip it and put it into the folder: Documents > Trackmania > Blocks > Stadium
For the Big decoration blocks u probably have to create a Basemap thats higher than the usual basemap since its to big of a macroblock to fit into a normal Map.
Also Youtube Video for the Showcase so u know what u can expect: https://youtu.be/4MzZEUCSWsQ