This tool can generate trees from Wikidata structures, such as subclasses, administrative divisions, and taxons.

Examples:

• Places in Cambridgeshire
• All birds (takes a few seconds)
• Location subclasses
• Parts of World War II (quite sparse...)

Options:

• For small result sets (less than ~250 items), try the d3 "star tree"
• Add "&lang=de" to get German labels, if available (works for all languages)

Note: This tool is based on Wikidata query, which means it can be a few minutes behind the current Wikidata state.
If an item has multiple parents, it will be sorted under the "deepest" parent, as more specific placements appear to be more useful.
Options : depth=number