House Okamura, Modern villa in Břevnov, Czech Republic

House Okamura is a residential villa in Břevnov composed of sixteen interconnected cylindrical towers that create three separate apartments with rooms of varying sizes across different levels. The cylinders have differing heights and their overlapping forms generate unexpected spatial arrangements throughout the structure.

Swiss architect Christian Kerez designed this residential project, completed in 2021, which broke away from conventional housing architecture. The building introduced a fresh approach to the traditional Břevnov neighborhood.

The house is nicknamed "Takeshi's Castle" after the Japanese TV game show, a joke added to Google Maps during construction. In November 2025 a group called Sametoví pamětníci hung Ukrainian flags on its fence, and in January 2026 the map listing was ironically renamed "Society for the Support of Ukraine".

The three apartments have independent entrances through separate staircase tubes, while narrow spaces between the cylinders contain elevators, storage, and bathrooms. Visiting requires a willingness to navigate tight passages and move through multiple levels to fully grasp the layout.

The house was nicknamed "Takeshi's Castle" on Google Maps during construction, a reference to the Japanese TV game show. Later ironic labels and reviews followed, tied to Tomio Okamura's public stances. The villa was also listed among the world's Houses of the Year 2023 by the Spanish magazine AV Monografías.