Use 30 square sheets of origami paper.
Difficulty : ⭐⭐
Time: 1.5 hours
This is Eiffel Tower designed by Irina Kasatonova.
Model paper size:
Unit (black-blue) : 5 cm x 5 cm
Model height: ~8 cm
PrwOrigami - Kusudama Collection
(July, 2021)
Eiffel Tower Kusudama
SKU: B484
See a tutorial from bilibili video.
https://www.bilibili.com/video/BV1BZ4y1P78v
See also DIY A4 YouTube.