Aug 20, 2025
Open Monument Day 2025 on September 14 - König building with historical dye collection
Open Monument Day 2025
Open Monument Day 2025 - König-Bau with historical dye collection
On Sunday, September 14, 2025, TU Dresden will open the König Building at Bergstraße 66c to visitors with its unique collection of dyes.
Built in 1926 by Martin Dülfer, the laboratory for color and textile chemistry still houses an outstanding scientific treasure: the university's historical dye collection.
Blick in die Farbstoffsammlung
With more than 20,000 natural and synthetic dyes - some dating back to the 1830s - rare color sample cards and theses with original color samples, it is a unique research and teaching resource in Europe. Housed in a two-storey collection room with light-proof original cabinets, it is directly adjacent to the lecture hall and preparation room. Together with Walter König's laboratory and the original preserved interior elements, the building impressively documents the combination of academic heritage, scientific specialization and listed architecture.
On Open Monument Day, we offer guided tours of the dye collection at 10 am, 11 am, 12 pm and 1 pm (registration is not required).
Tag des offenen Denkmals
Our guests will learn how this collection came into being, what scientific, technical and conservation skills are involved in its care and what challenges have had to be overcome and continue to have to be overcome in order to permanently preserve the unique teaching and research collection in the König-Bau.
At a glance
Opening hours: 10:00-14:00
Guided tours of the dye collection: 10am, 11am, 12pm and 1pm
Location: König-Bau, Bergstraße 66c, 01069 Dresden
Accessibility: unfortunately not barrier-free