This element is part of the Insectarium, not a seperate thing.

via StreetComplete 58.2

Weight limit depends on vehicle type.
18T for a regular vehicle
33T for a vehicle with trailer

via StreetComplete 58.2

Attached photo(s):
https://westnordost.de/p/233418.jpg

Unable to answer "This shop has been vacant. What’s here now?" – house number 1039: Vacant Shop – osm.org/node/10830928573 via StreetComplete 58.2:

Part of the restaurant Ichi Sushi next door (#1037)

Attached photo(s):
https://westnordost.de/p/235647.jpg