UNESCO in the context of "Mystras"

Sustainability (from the latin sustinere - hold up, hold upright; furnish with means of support; bear, undergo, endure) is the ability to continue over a long period of time. In modern usage it generally refers to a state in which the environment, economy, and society will continue to exist over a long period of time. Many definitions emphasize the environmental dimension. This can include addressing key environmental problems, such as climate change and biodiversity loss. The idea of sustainability can guide decisions at the global, national, organizational, and individual levels. A related concept is that of sustainable development, and the terms are often used to mean the same thing. UNESCO distinguishes the two like this: "Sustainability is often thought of as a long-term goal (i.e. a more sustainable world), while sustainable development refers to the many processes and pathways to achieve it."

Details around the economic dimension of sustainability are controversial. Scholars have discussed this under the concept of weak and strong sustainability. For example, there will always be tension between the ideas of "welfare and prosperity for all" and environmental conservation, so trade-offs are necessary. It would be desirable to find ways that separate economic growth from harming the environment. This means using fewer resources per unit of output even while growing the economy. This decoupling reduces the environmental impact of economic growth, such as pollution. Doing this is difficult.

A city centre, also known as an urban core, is the commercial, cultural and often the historical, political, and geographic heart of a city. The term "city centre" is primarily used in British English, and closely equivalent terms that exist in other languages, such as "centre-ville" in French, Stadtzentrum in German, or shìzhōngxīn (市中心) in Chinese. In the United States, the term "downtown" is generally used, though a few cities, like Philadelphia, use the term "Center City" or "City Center".

Sustainable development is an approach to growth and human development that aims to meet the needs of the present without compromising the ability of future generations to meet their own needs. The aim is to have a society where living conditions and resources meet human needs without undermining planetary integrity. Sustainable development aims to balance the needs of the economy, environment, and society. The Brundtland Report in 1987 helped to make the concept of sustainable development better known.

Sustainable development overlaps with the idea of sustainability which is a normative concept. UNESCO formulated a distinction between the two concepts as follows: "Sustainability is often thought of as a long-term goal (i.e. a more sustainable world), while sustainable development refers to the many processes and pathways to achieve it."

Sarandë (Albanian: [saˈɾandə]; Albanian definite form: Saranda; Greek: Άγιοι Σαράντα) is a city in Albania and the seat of Sarandë Municipality. Geographically, the city is located on an open sea gulf of the Ionian Sea within the Mediterranean Sea. Stretching along the Albanian Ionian Sea Coast, Sarandë has a Mediterranean climate with over 300 sunny days a year.

In ancient times, the city was known as Onchesmus or Onchesmos, and was a port-town of Chaonia in ancient Epirus. It owes its modern name to the nearby Byzantine monastery of the Forty Saints by which it became known from the High Middle Ages. Sarandë today is known for its deep blue Mediterranean waters. Near Sarandë are the remains of the ancient city of Butrint, a UNESCO World Heritage site. In recent years, Sarandë has seen a steady increase in tourists, many of them coming by cruise ships. Visitors are attracted by the natural environment of Sarandë and its archaeological sites. Sarandë is inhabited by a majority of ethnic Albanians, and also has a minority Greek community and as such has been considered one of the two centers of the Greek minority in Albania.

African historiography is a branch of historiography involving the study of the theories, methods, sources, and interpretations used by scholars to construct histories of Africa. Most African societies recorded their history via oral tradition, resulting in a lack of written records documenting events before European colonialism. African historiography has therefore lent itself to contemporary methods of historiographical study, the utilisation of oral sources, and the incorporation of evidence derived from various auxiliary disciplines, differentiating it from other continental areas of historiography due to its multidisciplinary nature.

Oral historians utilised various sources from their communities in crafting socially-consolidated histories which were then passed down through generations, with traditions serving as contemporary documents of messages from the past. Early written history about Africa was largely undertaken by outsiders, each of which had their own biases. Colonial historiography was Eurocentric and propagated racist theories such as the Hamitic hypothesis. African historiography became organised in the mid-20th century, and initially involved the refutation of colonial narratives. Nationalist histories sought to generate patriotism and sustain the multi-ethnic nation states, and African historiography saw a movement towards utilising oral sources in a multidisciplinary approach alongside archaeology and historical linguistics. Following growing pessimism about the fate of the continent, Marxist thought became popular, and contributed to a more critical study of colonialism. From 1981 UNESCO began publishing the General History of Africa, edited by specialists from across the continent. The 1980s saw universities struggle amid economic and political crises, resulting in the migration of many scholars (largely to the United States), and the discipline remains critically underfunded. Historians of Africa in the 21st century focus more on contemporary history than precolonial history, and are less ideological than their predecessors as the discipline has taken on a more pluralist form.

Koodiyattam (Malayalam: കൂടിയാട്ടം; IAST: kūṭiyāṭṭaṁ; lit. 'combined act') is a traditional performing art form in the state of Kerala, India. It is a combination of ancient Sanskrit theatre with elements of Koothu, an ancient performing art from the Sangam era. It is officially recognised by UNESCO as a Masterpiece of the Oral and Intangible Heritage of Humanity.

Odesa, also spelled Odessa, is the third most populous city and municipality in Ukraine and a major seaport and transport hub located in the south-west of the country, on the northwestern shore of the Black Sea. The city is also the administrative centre of the Odesa Raion and Odesa Oblast, as well as a multiethnic cultural centre. As of January 2021, Odesa's population was approximately 1,010,537. On 25 January 2023, its historic city centre was declared a World Heritage Site and added to the List of World Heritage in Danger by the UNESCO World Heritage Committee in recognition of its multiculturality and 19th-century urban planning. The declaration was made in response to the bombing of Odesa during the Russian invasion of Ukraine, which has damaged or destroyed buildings across the city.

In classical antiquity a large Greek settlement existed at its location no later than the middle of the 6th century BC. It has been researched as a possible site of the ancient Greek settlement of Histria. The first chronicle mention of the Slavic settlement-port of Kotsiubijiv, which was part of the Grand Duchy of Lithuania, dates back to 1415, when a ship was sent from here to Constantinople by sea. After the Grand Duchy lost control, the port and its surroundings became part of the domain of the Ottoman Empire in 1529, under the name Hacibey, and remained in it until the Ottomans' defeat in the Russo-Turkish War (1787–1792). In 1794, a decree of the Russian empress Catherine II was issued to establish a navy harbor and trading place in Khadjibey, which was named Odessa soon after. From 1819 to 1858, Odesa was a free port. During the Soviet period, it was an important trading port and a naval base. During the 19th century, Odesa was the fourth largest city of the Russian Empire, after Moscow, Saint Petersburg and Warsaw. Its historical architecture is more Mediterranean than Russian, having been heavily influenced by French and Italian styles. Some buildings are built in a mixture of different styles, including Art Nouveau, Renaissance and Classicist.

Paris is the capital and largest city of France, with an estimated city population of 2,048,472 in an area of 105.4 km (40.7 sq mi), and a metropolitan population of 13,171,056 as of January 2025. Located on the river Seine in the centre of the Île-de-France region, it is the largest metropolitan area and fourth-most populous city in the European Union (EU). Nicknamed the City of Light, partly because of its role in the Age of Enlightenment, Paris has been one of the world's major centres of finance, diplomacy, commerce, culture, fashion, and gastronomy since the 17th century.

Administratively, Paris is divided into twenty arrondissements (districts), each having their own cultural identity. Haussmann's renovation of Paris, which created new boulevards, parks, and public works, gave birth to a modern city known as the "capital of the 19th century". Paris is a major railway, motorway, and air-transport hub; in 2024 Charles de Gaulle Airport was the EU's busiest airport. Paris has one of the most sustainable transportation systems and is one of only two cities in the world that has received the Sustainable Transport Award twice. Its Art Nouveau-decorated Métro has become a symbol of the city. Paris is known for its museums and architectural landmarks: the Musée d'Orsay, Musée Marmottan Monet, and Musée de l'Orangerie are noted for their collections of French Impressionist art, while the Musée National d'Art Moderne, Musée Rodin, and Musée Picasso are noted for their collections of modern and contemporary art. Parts of the city along the Seine have been designated as a UNESCO World Heritage Site since 1991.

Java is one of the Greater Sunda Islands in the South East Asian country of Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea (a part of Pacific Ocean) to the north. With a population of 156.9 million people (including Madura) in mid 2024, projected to have risen to 158 million by mid-2025, Java is the world's most populous island, home to approximately 56% of the Indonesian population while constituting only 7% of its land area. Indonesia's capital city, Jakarta, is on Java's northwestern coast.

Many of the best known events in Indonesian history took place on Java. It was the centre of powerful Hindu-Buddhist empires, the Islamic sultanates, and the core of the colonial Dutch East Indies. Java was also the center of the Indonesian struggle for independence during the 1930s and 1940s. Java dominates Indonesia politically, economically, and culturally. Four of Indonesia's eight UNESCO world heritage sites are located in Java: Ujung Kulon National Park, Borobudur Temple, Prambanan Temple, and Sangiran Early Man Site.