I'm part of a Twitter baking group and we like to make the same things that were on Great British Bake Off. This week a challenge involved making a tower of a Swedish biscuit they called Kroken.  It was made with ground almonds and icing sugar.  They were assembled in tall towers and the show mentioned they are popular at weddings. However in trying to find recipes online Google seems to not know and turns up lots nuts in sugar type recipes. Is it possible that it is known by a different name so I can find some recipes. 
Krokan in this case is traditional Swedish wedding cake (the current Swedish king and queen had one, for example), of individual intricate shapes made of a marzipan/almond based mass with sugar and egg whites, that gets piped and baked, then assembled. It’s occasionally (mis-)translated as  e.g. croquembouche, but that’s technically incorrect. The Swedish Wikipedia has an article, so with a bit of google translate you could learn more. The most interesting bit for your research is that the recipe seems to be pretty much identical to the Danish/Norwegian Kransekake (“wreath cake”), just shaped more intricately. That should help when searching for recipes and more information. 