Pascal Oudet‘s website, author of these « Dendrochronologies« .
And we think of bubbles as fragile?
A great video on Surface tension phenomena from Lutetium project.
Recipe for making giant bubbles.
Freezing soap bubbles
The Tragedy of Foam
The science of champagne bubbles by the French specialist Gérard Liger-Belair
Necklaces and Catenaries
Majestic Catenary Arch from Curiosity Show channel
A more technical approach from Engineering Models channel
Elegant Stone Arches
Collection of images from the European Stone staking championship in 2018 : https://www.theguardian.com/artanddesign/gallery/2018/apr/23/2018-european-stone-stacking-championship-in-pictures
Shells and Mille-Feuilles
On the toughness of Nacre by R. Hovden, U. Michigan