Decision 44 COM 8B.45

The works of Jože Plečnik in Ljubljana – Human Centred Urban Design (Slovenia)

The World Heritage Committee,

1. Having examined Documents WHC/21/44.COM/8B and WHC/21/44.COM/INF.8B1,
2. Inscribes The works of Jože Plečnik in Ljubljana – Human Centred Urban Design, Slovenia, on the World Heritage List on the basis of criterion (iv);
3. Adopts the following Statement of Outstanding Universal Value:

   Brief synthesis

   The urban design for Ljubljana was conceived by Architect Jože Plečnik (1872–1957) in the period between the two World Wars. Following World War I and the disintegration of the Austro-Hungarian Empire, a desire to create independent nation states triggered various State and town building projects in Central and South-Eastern Europe. In the changed social contexts, the urban planners and architects introduced new urbanistic and architectural approaches under the influence of the Modernist movement. The transformation of Ljubljana from a peripheral town of the former Empire into a national capital emerged during the introduction of these modernist guidelines, although from entirely different architectural starting points.

   The urban design of “Plečnik’s Ljubljana” is based on an architectural dialogue between his interventions and the existing older city. Based on the man-made cityscape and its natural features, two urban axes were conceived: the land axis and the water axis. These two axes are connected by transversal axes, which help to form the urbanistic network of the city. The land axis – the Green Promenade starts at the Trnovo Bridge and runs through the Square of the French Revolution, along Vegova Street with the National and University Library, and ends at the Congress Square with Zvezda Park. Running parallel is the water axis – the Promenade along the Embankments and Bridges of the Ljubljanica River – which extends from the Trnovo district to the Sluice Gate. The historical city centre is connected with vital points in both the rural and urban suburbs, and with the broader spatial network of Ljubljana: the Church of St. Michael, the Church of St. Francis of Assisi, Plečnik’s Žale – Garden of All Saints.

   The city centre was interpreted anew and developed into a series of public spaces (squares, parks, streets, promenades, bridges) and public institutions (library, churches, markets, funerary complex).

   The property is an outstanding example of urban renewal developed in the context of existing buildings and spaces and tailored to suit the inhabitants. Together, Plečnik’s interventions have created a different type of urban space and architecture, which is not limited to a certain specific use, but instead gives rise to a connecting of the different uses and meanings and creates a new identity for the space. The architectural elements, types and spaces of classical architecture are innovatively summarised, transformed and modernised.

   Criterion (iv): The interventions designed by the architect Jože Plečnik throughout the city of Ljubljana in the short period between the two World Wars combine to become an outstanding example of human-centred urban renewal for the purpose of nation building after the demise of the Austro-Hungarian Empire. They are based on a harmonic relationship with the context of the space and its natural possibilities. The city is not built anew but improved with small- or large-scale interventions – new architectural ensembles, buildings and urban accents. The relationship with the past is established in various ways, from adapting the urban network and incorporating existing structures through architectural reminiscences and by establishing new cityscapes. The new urban space is not limited to a specific use but has various functions and the whole is thus imbued with new meanings.

   Integrity

   The urban design in Ljubljana, as a result of the intervention by Jože Plečnik, includes the readily identifiable characteristics of a symbolic capital city created between the two World Wars by the architect. Ljubljana’s urban landscape comprehensively illustrates an upgrade of the existing space with regards to the topography and based on its continuous use and interpretation of historical layers. The topography of the space is expressed through the urban landscape design of the two axes: the land axis and the water axis. The design of both promenades originates and draws from the continuous use of the space, which defines the positions and use of squares, markets, bridges, parks and other public spaces as well as buildings. A series of public spaces endows the city with public amenities, from spiritual spaces (the Churches of St. Michael and St. Francis of Assisi, Plečnik’s Žale – The Garden of All Saints), spaces for relaxation (archaeological park along the Roman Walls, and promenades along the embankments of the Ljubljanica River, Trnovo Quay), to market activities (Plečnik’s Market), socialising (Congress Square, the Three Bridges, the Cobblers’ Bridge), and intellectual and cultural activities (Vegova Street, National and University Library).

   A unified protection regime ensures that the currently unbuilt upon areas remain building-free, that the space preserves its traditional use, and provides comprehensive protection from interventions that could potentially endanger the integrity of the serial property.

   Authenticity

   The serial property has maintained its original urban design and characteristics, in which the preservation and enhancement of the context of the space are reflected. The serial component parts have faithfully preserved their original design in the exterior arrangements, in the interiors as well as on the facades, in the interior furnishings and the masterful attention to detail. The building materials were reinforced in most components in the 1990s, but regardless of the individual repairs or conservation and restoration interventions, which were a consequence of continuous use, material authenticity in general has not been compromised. Larger urbanistic areas have remained unchanged; in some cases, repairs were performed in order to meet the requirements of modern use and ensure the greater safety and structural stability of the property. With few exceptions, the original functions and uses of all components and their features are preserved and the outdoor spaces are accessible to the public. The characteristics of the original urban design have been preserved as well, although partial changes have appeared due to the overgrowth of the original vegetation and in some places the pressure of local traffic, which has been strategically addressed over the course of the previous decade.

   Protection and management requirements

   Plečnik’s architectural heritage is a monument of national importance and is protected by the Ordinance designating the Ljubljana work of the architect Jože Plečnik as a cultural monument of national importance (Official Gazette RS, Nos. 51/09, 88/14, 19/16, 76/17 and 17/18). The Ordinance represents a single comprehensive protection mechanism for the entire immovable and movable heritage of the serial property.

   All of the serial component parts have conservation plans that form the basis for any interventions on the monuments. Works are coordinated by the Institute for the Protection of Cultural Heritage (IPCHS) and supervised by the specially-appointed conservator for Plečnik’s heritage. The management system complements the existing system for the preservation of architect Jože Plečnik’s heritage in Ljubljana from the professional, organisational as well as legal and financial perspectives, and involves owners, managers and public bodies alike. The management of the property operates on two levels. All component parts have their specific management plans and procedures for the implementation and approval of such plans. State of conservation is monitored by the IPCHS, with a special emphasis on the factors likely to affect the property, in particular development pressures and tourism. The coordination of individual owners, managers, public institutions and professional bodies that form the Management Body is ensured by a joint manager that has overall responsibility for the implementation of a joint management plan. The Museum of Architecture and Design of Ljubljana, as an appointed joint manager, cooperates with those institutions at the state and local level that are responsible for protection, monitoring, presentation, education and research, promotion and cultural tourism.

4. Recommends that the State Party give consideration to the following:
   1. Submitting a minor boundary modification of the extended buffer zones, when formalised, with an updated map showing the property and the buffer zones’ boundaries, indicating the total area of the buffer zones in hectares; considering submitting in the future a minor boundary modification with a view to including relevant transversal axes, if their state of conservation could be improved to fully meet the conditions of authenticity and integrity,
   2. Submitting to the World Heritage Centre a complete Heritage Impact Assessment for the planned new library building in Emonska Street for review by the Advisory Bodies, before irreversible decisions are made,
   3. Retaining or reinstating original vegetation species of the landscaping designs wherever possible and appropriate,
   4. Ensuring subtle differentiation of additions and repairs from the original substance, where appropriate, and avoiding mimetic additions that would try to complete Plečnik’s original work,
   5. Developing a joint visitor and interpretation scheme that will link the serial component parts in the suburbs to those in the city centre,
   6. Undertaking further detailed identification of the relationships between Plečnik’s interventions and pre-existing buildings and spaces, to allow appropriate protection measures to be put in place for the latter, relative to the role they play in supporting the Outstanding Universal Value,
   7. Carrying out Heritage Impact Assessments for all development proposals within the property or its buffer zones.