Staxel Museum. 1 collecting fossils 2 polishing fossils. The städel is thus observing the official precautionary measures to contain the corona pandemic.
Fossils is a broad term that refers to the various items that have been refined from unpolished fossils and consists of various dinosaur fossils minerals artifacts and other ancient oddities. Rowan is also a good source of info when you have no other quests or favors to complete. Once built you will gain a special crafting table the fossil polisher allowing you to process the unpolished fossils you can mine all around the island into fossil parts and minerals.
Also the natural displays should not show up in the shipping catalogue and are only quest rewards now.
Vorlen was a museum curator before his accident and will ask you to build one for him upon noticing that the village doesn t have one and will give you the required building sign. Just ask him for rumors. These refined fossil items can be donated to the museum placed around the island for decoration or sold to merchants for more petals than unpolished fossils. Over the coming weeks you can enjoy the städel in the comfort of your own home.