
Why Leopold Forstner matters
Leopold Forstner was one of the Vienna Secession's key figures in mosaic and decorative arts, the artist Gustav Klimt and the Wiener Werkstatte relied on to physically execute major works. As founder and head of the Wiener Mosaikwerkstatte from 1908, Forstner's workshop produced the mosaics for Klimt's Stoclet Frieze in the Palais Stoclet in Brussels, one of the signature commissions of the Vienna 1900 era. For collectors and institutions interested in the material culture of Jugendstil Vienna, Forstner sits close to the center of that story, even though his own market presence is modest and largely mediated through museums and architecture rather than through the auction room.
- Born
- 1878-11-02, Bad Leonfelden (Leonfelden), Upper Austria, Austria
- Nationality
- Austrian
- Media
- Mosaic, Glass, Painting, Poster design
- Movement
- Vienna Secession, Jugendstil
- Education
- Kunstgewerbeschule (Imperial-Royal School of Arts and Crafts), Vienna, c. 1899 to 1902, under Karl Karger and Koloman Moser; Academy of Fine Arts, Munich, 1902 to 1903, under Ludwig von Herterich. No academic degree is documented. Earlier training included the Staatshandwerksschule, Linz, and an apprenticeship in glass painting and mosaic at the Tyrolean Glass Painting and Mosaic School, Innsbruck.
- Signature motifs
- Mosaic built from unconventional materials, Jugendstil surface ornament, Architectural collaboration
By the numbers
- 1878 to 1936LifespanBorn Bad Leonfelden, died Stockerau, Austria
- Vienna Secession, JugendstilMovement
- Founder, Wiener Mosaikwerkstatte, 1908WorkshopExecuted Gustav Klimt's Stoclet Frieze mosaics
- 1911Exhibition debut abroadInternationale Kunstausstellung, Rome
Biography
Leopold Forstner was born on 2 November 1878 in Leonfelden (today Bad Leonfelden), Upper Austria. He attended primary school locally, then the Staatshandwerksschule (State School of Crafts) in Linz. He went on to an apprenticeship in glass painting and mosaic at the Tyrolean Glass Painting and Mosaic School in Innsbruck, before moving to Vienna to study.
From around 1899 to 1902 he studied at the Kunstgewerbeschule (the Imperial-Royal School of Arts and Crafts, now the University of Applied Arts Vienna), first under Karl Karger and then in the class of Koloman Moser, who became his mentor. He continued his training from November 1902 to 1903 at the Academy of Fine Arts in Munich, in the painting master class of Ludwig von Herterich. No formal degree from either institution is documented in the available sources.
Forstner exhibited at the 1908 Kunstschau Wien, where an entire room was set aside for him and his newly founded mosaic workshop, and critics praised his technical skill. He showed again at the 1909 Internationale Kunstschau in Vienna. In 1911 he had his exhibition debut abroad at the Internationale Kunstausstellung in Rome, shown alongside Klimt. His Wiener Mosaikwerkstatte went on to execute the mosaics of Klimt's Stoclet Frieze for the Palais Stoclet in Brussels, and his mosaics appear on Vienna churches, including the Otto Wagner Church at Steinhof, the Karl Lueger Church windows at the Vienna Central Cemetery, and the apse mosaic of the parish church in Linz-Ebelsberg.
He is reported to have worked as art master at the Bundesgymnasium in Hollabrunn from 1929 until his death. Leopold Forstner died on 5 November 1936 in Stockerau, Lower Austria, and is buried in a family grave in the Stockerau cemetery that he designed himself.
Critical reception
Contemporary critics recognized Forstner quickly as a leading craft artist of the Secession generation. The critic Franz Servaes praised him in the periodical Kunst und Kunstler in 1910 as head of the newly founded Wiener Mosaikwerkstatte and a pioneering figure in decorative mosaic art. No major state prizes or formal honors are documented for Forstner; his standing rests instead on this kind of contemporary critical recognition and on his institutional role as head of his own workshop.
Market
Forstner's market footprint is thin and largely institutional rather than driven by auction turnover. Documented holdings include a ceramic bowl designed by Forstner and produced by the Wiener Werkstatte at the Metropolitan Museum of Art in New York. Much of his most significant work is architectural and site-specific, embedded in Vienna churches and buildings rather than held as movable objects, which naturally limits the pool of works that could ever come to market. The best-documented public sale identified for this profile is a mosaic titled Jugendkopf mit Lorbeerkranz (Youth's head with laurel wreath), circa 1912, which realized EUR 7,680 including fees at im Kinsky in Vienna; the exact sale date could not be confirmed, and available sources do not support a full ranking of his all-time top results, so this should be read as the best-documented result rather than a confirmed record.
Top auction results
| Work | Price | Sale |
|---|---|---|
| Jugendkopf mit Lorbeerkranz (Youth's head with laurel wreath) | EUR 7,680 (hammer EUR 6,000) | im Kinsky, Vienna |
Selected exhibitions
| Years | Exhibition | Venues |
|---|---|---|
| 1908 | Kunstschau Wien | Vienna |
| 1909 | Internationale Kunstschau | Vienna |
| 1911 | Internationale Kunstausstellung | Rome |
Museum collections
- Metropolitan Museum of Art, New York
Authentication and provenance
No catalogue raisonne.
No catalogue raisonne has been identified for Forstner. A scholarly monograph on his work exists but does not constitute a published catalogue raisonne. Attribution and verification rely on museum records, period exhibition documentation, and archival material held in connection with the artist's estate.
Primary reference: https://en.wikipedia.org/wiki/Leopold_Forstner
What collectors should know
There is no catalogue raisonne for Leopold Forstner and no current gallery or estate representation actively managing his market; verification depends on museum records, period exhibition documentation, and archival material connected to the artist's estate, some of which is referenced by the Klimt Foundation in Vienna. Because so much of his significant work is architectural and fixed in place, the pool of movable, saleable objects is small; the one documented public sale identified for this profile, a mosaic that realized EUR 7,680 at im Kinsky in Vienna, is too thin a data point to establish a reliable price history. Interest in Forstner is best understood as adjacent to the broader, better-documented market for Vienna 1900 design and for Klimt's circle, rather than as a market with its own established price history.
Further reading and resources
Data current as of 2026-07-15.

