Born in Bielefeld, Walther was a member of the editorial staff of the cultural magazine Der Türmer, which was published under the direction of Friedrich Lienhard who was positioned as völkisch.
In 1932, Walther proposed the construction of an open-air stage at the foot of the Wartburg, for which he received support from the reußischen Erbprinz Heinrich XLV.
and also from Alfred Rosenberg and Walter Stang [de], so that the laying of the foundation stone of the "Wartburg-Waldbühne" took place in the same year.
Walther received further support from Hans von der Gabelentz [de], the Wartburg's castle governor.
After the Machtergreifung, construction was accelerated and the stage opened on 20 April 1933 with a performance of Hanns Johst's play Schlageter.