The De Jonge Wiki is a scientific research database on the architectural history of the Arenberg Castle in Heverlee (Belgium). The castle belongs to the KU Leuven and is regularly studied by students as part of their training.

The database consists of a WikiMedia front end and a Wikibase database in the background. The info boxes for the individual items in the front end are automatically fed from the associated data sheets in the background.

This combination of descriptive text and semantic data is intended to serve as a prototype for easy-to-set-up, inexpensive and easy-to-use scientific research databases.