The Steinhof church was built between 1903-1907 and it was built on the site of an asylum for the mentally ill -- which is perhaps ironic, because never was there a more sane approach to modernity within sacred art than is to be found here.
Of course Otto Wanger, while being the main architect, was not solely responsible for all the artistic contents of the church of course. The mosaics and glasswork that are found in the church were designed by another Viennese artist, Koloman Moser (+1918) and the distinctive and iconic sculptural angels which would come to adorn the exterior facade of the church were designed by Austrian artist Othmar Schimkowitz (+1947).
One of the most stunning features of the church is its high altar with its metal canopy which is surmounted by a backdrop mosaic showing Christ enthroned in glory, surrounded by saints and angels.
This raises a point worth noting. All of the various contingent parts and pieces of this church were done to reflect this particular style. From the main architectural components, down to the vestments, candlesticks, sanctuary lamps, confessionals, organ and so on.
I will leave you with few final random views of others parts and pieces of the church which help to show this.