The 123m-tall Tower 123 is a design by invitation by Croatian firm 3LHD Architects for a new and tallest building in Zagreb and in Croatia.
3LHD Architects has proposed the design as a solution for the shortage of quality public space on the location of the tower and the surrounding district. The principal avenue at the entry to Zagreb, the capital of Croatia, has been conceived as the main business area, giving a thoroughly new appearance to the city. The Business Tower 123 is planned to become the key element of the whole area, with its height of 123m and the advanced Diagrid structure which is a strong, safe and cost-effective diagonal structural concept.
A trapezoidal ground plan is without columns, which provides for various ground plan possibilities. The interior space of the tower is shared by business and public areas. The ground floor consists of a tall multi-level lobby with access from all directions and different levels. The public facilities consist of a café and a restaurant located at mid height of the tower and on the top floor, where a belvedere with a 360° sightseeing area and a Museum of Zagreb Urban Development have also been planned. The roof area is reserved for a heliport.
The exterior of the building is clad in a glass curtain wall offering a monolithic look accentuated by its long, slender shape and clean massing.
