Oskar Semler's family first lived in Jagellonská Street near today's Klatovská Street, from where they originally planned to move to a family house as well as company headquarters located at 19 Klatovská Street. This would, however, mean a significant reconstruction of this house and extension by two more floors. Oskar Semler therefore finally came to another solution, i.e. he decided to buy an apartment building at 110 Klatovská Street. In 1932, he asked Adolf Loos to create a project for a generous adaptation of the apartment which was created from one entire wing of the house at 110 Klatovská Street. Due to bad health and subsequent death of Adolf Loos the completion of the design and reconstruction was taken over by his disciple and collaborating architect Heinrich Kulka. Oskar Semler moved to his new home with his family in 1934.


It is the only apartment in Pilsen designed by Loos where we find a unique principle called the raumplan - the individual rooms in the apartment differ in their height and moreover, they are also elevated to many different levels and interconnected by stairs to create continuously adjoining spaces. In the apartment, we can admire the raumplan principle with a spacious salon with cladding of Finnish birch tree, a floor which is made of a rare Makassar and a fireplace made of blocks of clinkstone. There is a bookcase, red painted ceiling beams and gilded planks. A number of details have been preserved, including a lift which was used for transporting food from the kitchen to the individual rooms at different levels of height. The apartment is divided into a part accessible for visitors and a carefully separated private part with bedrooms and children's rooms on the upper floor of the house.


The house was transferred from the property of the city of Pilsen to the property of the Pilsen Region and currently it is administered by the Gallery of West Bohemia which intends to establish a Research Centre of Architecture in the premises after completion of the reconstruction. The first part of Oskar Semler's apartment was opened to visitors in November 2015. Nowadays, the guided tour is temporarly closed due to the reconstruction of the house.

Adolf Loos, 110 Klatovska Street, Pilsen

Other interiors

B10 10 Bendova Street
K12 12 Klatovska Street
H58 58 Husova Street
K110 110 Klatovska Street
K19 19 Klatovska Street
P6 6 Placheho Street
K140 140 Klatovska Street
NR22 22 Republic Square
  • B10

    10 Bendova Street
    The Apartment of Kraus Family

    Part of the Guided Tour 1

  • K12

    12 Klatovska Street
    The Apartment of Doctor Vogl

    Part of the Guided Tour 1

  • H58

    58 Husova Street
    The Brummel House

    Part of the Guided Tour 2

  • K110

    110 Klatovska Street
    The Semler House

    Temporarily closed

  • P6

    6 Placheho Street
    Richard Hirsch's Apartment

    The apartment is accessible
    only occasionally.

  • K19

    19 Klatovska Street
    Hugo Semler's Apartment

    The apartment is accessible
    only occasionally.

  • K140

    140 Klatovska Street
    Leo Brummel's Apartment

    The apartment is not accessible
    for public.

  • NR22

    22 Republic Square
    Weiner's Apartment

    The apartment is not accessible
    for public.