The World’s Largest Archipelago and Largest Muslim-Majority Country
Indonesia is a country of staggering scale and complexity. It is the world’s largest archipelago — comprising over 17,000 islands, of which roughly 6,000 are inhabited — stretching about 5,000 km from west to east, equivalent to the distance from London to Tehran. It has a population of 279 million people (the world’s fourth-largest), making it both the most populous Muslim-majority country and the third-largest democracy after India and the United States.
The country occupies one of the world’s most geologically active regions — the Pacific Ring of Fire — with 127 active volcanoes (the most of any country). The 1815 eruption of Tambora on Sumbawa is the largest volcanic eruption in recorded history; the 1883 eruption of Krakatoa between Java and Sumatra produced what is generally considered the loudest sound ever heard. The 2004 Indian Ocean earthquake and tsunami killed over 230,000 people, predominantly in Indonesia’s Aceh province.
Indonesia is also one of the world’s most biodiverse countries — it ranks #2 globally (behind Brazil) in total species count, with vast swathes of tropical rainforest in Sumatra, Borneo, and Papua containing thousands of endemic species, including the orangutan, the Komodo dragon (the world’s largest lizard), and the rafflesia (the world’s largest flower).
A Brief History
Pre-Colonial Indonesia
The islands of Indonesia have hosted complex civilisations for over a thousand years. The Srivijaya Empire (7th-13th centuries) was a major Buddhist maritime power based in Sumatra. The Majapahit Empire (1293-1527), centred on Java, was the largest Indonesian empire pre-colonialism. Islamic kingdoms progressively replaced Hindu-Buddhist polities from the 13th-16th centuries.
Dutch Colonisation
The Dutch East India Company (VOC) established trading posts from 1602; the Dutch East Indies colonial state lasted from 1800 to 1949. Dutch rule was extractive and frequently brutal — particularly the 19th-century Cultivation System (Cultuurstelsel) which forced peasants to grow export crops.
Independence
Sukarno declared Indonesian independence on 17 August 1945 after Japan’s WWII surrender. The Dutch fought to retain control until 1949 when international pressure forced recognition of Indonesian sovereignty.
The Suharto Era and After
General Suharto’s “New Order” (1966-1998) followed a violent anti-Communist purge in 1965-1966 that killed an estimated 500,000-1 million people. Suharto’s regime brought economic development alongside extensive corruption and human rights abuses; it fell during the 1997-98 Asian Financial Crisis.
Reformasi — democratisation since 1998 — has produced six free presidential elections. Joko Widodo (“Jokowi”) served two terms (2014-2024); Prabowo Subianto took office in October 2024.
The new capital city Nusantara is being built in East Kalimantan (Borneo) to replace Jakarta — which is sinking and badly congested.
Geography and Climate
Indonesia covers 1,904,569 km² of land — straddling the equator with a tropical climate throughout. The country has a wet season (October-April) and dry season (May-September), with regional variation.
Culture, Language and Religion
Indonesian (Bahasa Indonesia) — a Malay-based national language — was adopted at independence as the lingua franca. Most Indonesians speak both Indonesian and a regional language (Javanese, Sundanese, Madurese, etc.). The country has approximately 700 living languages.
Religion: 87% Muslim, 10% Christian, 2% Hindu (concentrated in Bali), 1% Buddhist.
The Economy
Indonesia has Southeast Asia’s largest economy (~$1.4 trillion GDP in 2024) and is projected to become the world’s 4th-largest by 2050. Key sectors: palm oil (world’s largest producer), coal, nickel (critical for EV batteries; Indonesia controls ~50% of global production), manufacturing, tourism.
Cuisine
Indonesian cuisine varies by island — Padang food (Sumatra), Javanese cuisine, Balinese, Sulawesi, Maluku — but several dishes are nationally iconic:
- Nasi goreng — Indonesian fried rice
- Mie goreng — fried noodles
- Rendang — slow-cooked dry beef curry from Padang, often called one of the world’s best dishes
- Sate — skewered grilled meat
- Gado-gado — vegetables in peanut sauce
- Soto — Indonesian soup, in countless regional variants
- Sambal — chilli sauce, eaten with everything
Nature and UNESCO Sites
Indonesia has 9 UNESCO World Heritage Sites, including Borobudur Temple Compounds, Prambanan Temple Compounds, Komodo National Park, Ujung Kulon National Park, Lorentz National Park, the Cultural Landscape of Bali Province, the Ombilin Coal Mining Heritage, and the Sangiran Early Man Site.
Travel Guide
Entry
Most Western nationalities can obtain a visa on arrival ($35) or e-visa for 30-day stays.
Best Seasons
April-October is the dry season (best for most of the country). November-March is the wet season.
Transport
Domestic flights essential — Garuda, Lion Air, Citilink. Inter-island ferries connect islands.
Budget
Indonesia is inexpensive — daily mid-range budgets of $30-$70 are comfortable.
Surprising Facts
- Indonesia is the world’s largest island country — over 17,000 islands across 5,000 km.6
- Komodo dragons — the world’s largest lizards (up to 3 metres long, 70 kg) — exist in the wild only on a few small Indonesian islands (Komodo, Rinca, Padar, Flores).1
- Indonesia has the world’s largest Muslim population (around 240 million) — far more than the Middle East combined.4
- The Indonesian island of Sumba is one of the few remaining places where horse warfare (Pasola) is practised as a ceremonial event.3
- Bali — though Indonesia is overwhelmingly Muslim — is roughly 87% Hindu, the only Hindu-majority island in the country.4
- Jakarta is sinking at a rate of up to 25 cm per year in some areas due to groundwater extraction; this is a primary reason for the planned move to Nusantara, the new capital being built on Borneo.3
Sources and References
See the list of cited sources in the page frontmatter.