Aritma Praha building, Administrative tower in Vokovice, Prague, Czech Republic

Shiran Tower, formerly the building of the Research Institute of Mathematical Machines, is a 73-metre, 16-storey high-rise on the edge of the Divoká Šárka nature reserve in Vokovice, next to the former Aritma Vokovice works. Its structure is a prefabricated reinforced-concrete skeleton, with 10,347 m² of interior space, of which 6,218 m² is offices.

Shiran Tower was built in 1971 as the building of the Research Institute of Mathematical Machines, next to the former Aritma Vokovice state enterprise. It is 73 metres tall with 16 floors and a prefabricated reinforced concrete frame. A major reconstruction followed in 2002.

The tower's name comes from Shiran, the company associated with the building; it was formerly the building of the Research Institute of Mathematical Machines. Its ground floor holds the data centre halls of the firm Freetel, a function visible to anyone entering the lobby.

The tower stands on the edge of the Divoká Šárka nature reserve in Vokovice, next to the grounds of the former Aritma national enterprise. It is an office building with leasable space, not a public attraction, so visits are arranged with tenants; the Divoká Šárka tram stop serves the area.

The ground floor houses the data centre halls of the Freetel company, a detail easy to miss from the street. The tower stands beside the grounds of the former Aritma Vokovice state enterprise, on the edge of the Divoká Šárka nature reserve.