Construction of Zagreb’s first high-rise began in 1933. The building was completed in just 79 days and opened in 1934, taking its name from its owner, Eugen Radovan. The structure had originally been planned at a lower height, but because the Zagreb city plan reserved surrounding areas as open space for traffic, the architect decided to build upward instead. This vertical emphasis not only ensured a more efficient use of the plot, but also created a prominent surface for large-scale advertising. The brands Bosch, Blitz, and Opel, distributed by Radovan, were promoted through striking vertical signs mounted on the façade.
Architect Slavko Löwy kept his office on the top floor, where he is believed to have spent nights as well. The forty square meters were sufficient for both living and working, reflecting his modernist commitment to reducing living space to its essential needs.
The house is also known as Loewyeva visoka kuća (Loewy high-rise) according to the architect's name.