Archipelago in the context of "Macaronesia"

Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asian mainland, it is bordered to the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea in the south. The Japanese archipelago consists of four major islands alongside 14,121 smaller islands. Japan is divided into 47 administrative prefectures and eight traditional regions, and around 75% of its terrain is mountainous and heavily forested, concentrating its agriculture and highly urbanized population along its eastern coastal plains. With a population of over 123 million as of 2025, it is the world's 11th most populous country. Tokyo is the country's capital and largest city.

The first known habitation of the archipelago dates to the Upper Paleolithic, with the beginning of the Japanese Paleolithic dating to c. 36,000 BC. Between the 4th and 6th centuries, its kingdoms were united under an emperor in Nara and later Heian-kyō. From the 12th century, actual power was held by military aristocrats known as shōgun and feudal lords called daimyō, enforced by warrior nobility named samurai. After rule by the Kamakura and Ashikaga shogunates and a century of warring states, Japan was unified in 1600 by the Tokugawa shogunate, which implemented an isolationist foreign policy. In 1853, an American fleet forced Japan to open trade to the West, which led to the end of the shogunate and the restoration of imperial power in 1868.

Southeast Europe or Southeastern Europe is a geographical sub-region of Europe, consisting primarily of the region of the Balkans, as well as adjacent regions and archipelagos. There are overlapping and conflicting definitions of the region, due to political, economic, historical, cultural, and geographical considerations.

Sovereign states and territories that may be included in the region are Albania, Bosnia and Herzegovina, Bulgaria, Croatia (alternatively placed in Central Europe), Greece (alternatively placed in the broader region of Southern Europe), Kosovo, Montenegro, North Macedonia, Romania (alternatively placed in Eastern Europe), Serbia, and the European part of Turkey (alternatively placed in the broader region of Southern Europe, also in Western Asia with the rest of the country). Sometimes, Cyprus (most often placed in West Asia), Hungary (most often placed in Central Europe), Moldova (most often placed in Eastern Europe), and Slovenia (most often placed in Central Europe) are also included due to cultural or historical factors and affiliation.

Santorini, officially Thira or Thera, is a Greek island in the southern Aegean Sea, about 200 km (120 mi) southeast from the mainland. It is the largest island of a small, circular archipelago formed by the Santorini caldera. It is the southernmost member of the Cyclades group of islands, with an area of approximately 73 km (28 sq mi) and a 2021 census population of 15,480. The municipality of Santorini includes the inhabited islands of Santorini and Therasia, and the uninhabited islands of Nea Kameni, Palaia Kameni, Aspronisi, Anydros, and Christiana. The total land area is 91 km (35 sq mi). Santorini is part of the Thira regional unit.

Santorini is the most active volcanic centre in the South Aegean Volcanic Arc. The volcanic arc is approximately 500 km (300 mi) long and 20 to 40 km (12 to 25 mi) wide. The region first became volcanically active around 3–4 million years ago, though volcanism on Thera began around 2 million years ago with the extrusion of dacitic lavas from vents around Akrotiri. One of the largest volcanic eruptions in recorded history struck the island about 3,600 years ago, leaving a large water-filled caldera surrounded by deep volcanic ash deposits.

The Japanese archipelago (Japanese: 日本列島, Hepburn: Nippon/Nihon Rettō; Japanese pronunciation: [ɲip.pon/ɲi.hon ɾeꜜt.toː]) is an archipelago of 14,125 islands that form the country of Japan. It extends over 3,000 km (1,900 mi) from the Sea of Okhotsk in the northeast to the East China and Philippine seas in the southwest along the Pacific coast of the Eurasian continent, and consists of three island arcs from north to south: the Northeastern Japan Arc, the Southwestern Japan Arc, and the Ryukyu Island Arc. The Daitō Islands, the Izu–Bonin–Mariana Arc, and the Kuril Islands neighbor the archipelago.

Japan is the largest island country in East Asia and the fourth-largest island country in the world with 377,975.24 km (145,937.06 sq mi). It has an exclusive economic zone of 4,470,000 km (1,730,000 sq mi).

The Aegean Islands are the group of islands in the Aegean Sea, with mainland Greece to the west and north and Turkey to the east; the island of Crete delimits the sea to the south, those of Rhodes, Karpathos and Kasos to the southeast. The ancient Greek name of the Aegean Sea, Archipelago (ἀρχιπέλαγος, archipelagos), was later applied to the islands it contains and is now used more generally, to refer to any island group.

The vast majority of the Aegean Islands belong to Greece, being split among nine administrative regions. The only sizable possessions of Turkey in the Aegean Sea are Imbros (Gökçeada) and Tenedos (Bozcaada), in the northeastern part of the sea. Various smaller islets off Turkey's western coast are also under Turkish sovereignty.

The Cyclades (/ˈsɪklədiːz/; Greek: Κυκλάδες, romanized: Kykládes, IPA: [ciˈkla.ðes]) are an island group in the Aegean Sea, southeast of mainland Greece and a former administrative prefecture of Greece. They are one of the island groups which constitute the Aegean archipelago. The name (Κυκλάδες νήσοι, Kykládes nísoi, 'encircling islands') refers to the archipelago forming a circle around the sacred island of Delos. The largest island of the Cyclades is Naxos; the most populated, however, is Syros.

The (Northern) Sporades are an archipelago along the east coast of Greece, northeast of the island of Euboea, in the Aegean Sea. They consist of 24 islands, four of which are permanently inhabited: Alonnisos, Skiathos, Skopelos and Skyros. They may also be referred to as the Thessalian Sporades (Θεσσαλικές Σποράδες).

The Saronic Islands or Argo-Saronic Islands is an archipelago in Greece, named after the Saronic Gulf in which they are located, just off the Greek mainland. The main inhabited islands of this group are Salamis, Aegina, Agistri, and Poros. The islands of Hydra and Dokos, which lie off the northeast tip of the Peloponnese (technically between the Saronic Gulf and the Argolic Gulf), are sometimes included as part of the Saronic Islands.

Many mainland Greeks have vacation homes in the Saronic Islands, which are regularly served by ferries from the Athen's port of Piraeus and the Peloponnese. Salamis, the largest island of the group, is where the ancient Greek navy defeated the Persians in the Battle of Salamis in 480 BC.

37°48′00″N 23°27′00″E / 37.8000°N 23.4500°E / 37.8000; 23.4500

The North Aegean islands are a number of scattered islands in the North Aegean Sea, also known as the Northeastern Aegean islands, belonging mostly to Greece and a few of them to Turkey. The islands do not form a physical chain or group, but are frequently grouped together for tourist or administrative purposes. To the south are the Dodecanese islands, and to the west are the Cyclades and Sporades islands.