Kai-Palast, Vienna

Kai-Palast was a residential and commercial building located at Franz-Josefs-Kai 47 that showcased early reinforced concrete construction in Vienna. The structure demonstrated how architects adapted new building materials for modern mixed-use developments of its era.

Completed in 1911 under architect Ignaz Reiser's direction, this building was Austria's first high-rise constructed with reinforced concrete technology. It established new standards for office buildings and modern housing complexes in the city.

The building remained a protected architectural monument from its completion until 1999, representing the evolution of Vienna's urban landscape.

The building held protected monument status until 1999, after which structural assessments became possible. Following inspections that revealed fire damage from the 1945 bombing, it was demolished in 2001 to make way for the modern k47 development.

During its final demolition phase, all intermediate ceilings from the sixth floor collapsed simultaneously to the ground without causing any injuries. This unusual structural failure made the demolition notable in Vienna's building history.

Location: Vienna

Inception: 1911

Architects: Ignaz Reiser

GPS coordinates: 48.21530,16.37220

Latest update: December 12, 2025 12:03