Around the turn of the century Taschner had been making a substantial impression on the artists of the Munich, Vienna and Berlin Secessions.

Then in 1898, working for the architects Helbig & Haiger, he made a series of decorative murals in the Munich Kunstgewerbehaus as well as for an exhibition in the Glasspalast.

In 1902 he participated in a fountain competition for Kempten (2nd prize), designed a silver crucifix, created the figure ″Unterfranken″ for the New Town Hall in Munich, the etchings ″Kirchgang und Botenfuhrwerk″ and the illustrations for ″Die Nymphe des Brunnens″ and ″Kirchgang″ for the publisher Martin Gerlach.

He became friends with Ludwig Thoma of Munich, then editor of Simplicissimus; for whose story Der heilige Hies he contributed the illustrations.

An essential part of his jewelry works was created also at this time in connection with the metal class of the Breslau School of Art.

In 1904 Taschner went to Berlin and worked for the famous architect Alfred Messel and especially for Ludwig Hoffmann, for whom he produced many architectural sculptures.