Most travellers to Indonesia head straight for Bali or Komodo. Sulawesi, the sprawling K-shaped island between Borneo and the Moluccas, offers something different: coral walls, rare primates, ancient burial sites and volcanic highlands, all without the crowds. It takes effort to get around, but that's exactly the appeal.

**Underwater, North and South**
Sulawesi sits within the Coral Triangle, and two marine parks anchor its diving reputation. Bunaken National Marine Park, off Manado in the north, protects steep underwater walls and dense reef habitats — scuba is the main draw, though snorkellers can see plenty in the shallows. In the southeast, Wakatobi National Park spreads across four islands (the name is a mash-up of Wangi-Wangi, Kaledupa, Tomia and Binongko). Tomia is the divers' base, Hoga suits snorkellers, and Wangi-Wangi is the main gateway. Boat transfers depend on sea conditions, so build in buffer days. The area is also home to the Bajo (Sama-Bajau) seafaring communities — ask before pointing a camera at anyone.

**Wildlife at Tangkoko**
Tangkoko Nature Reserve, near Bitung, is one of the best places on earth to see spectral tarsiers, tiny nocturnal primates with enormous eyes. Guided dawn or dusk walks are the way to do it, and staying near the reserve makes early starts easy. Sulawesi black macaques and hornbills are regularly spotted by day. Keep your distance and never feed the macaques.

**Culture in Tana Toraja**
The highlands of South Sulawesi are the island's cultural centrepiece. Around Rantepao you'll find tongkonan houses with sweeping curved roofs, the cliff burial sites of Lemo, the burial caves of Londa, and tau-tau — carved wooden effigies of the dead. Funeral ceremonies called Rambu Solo' can run for days; some fall between July and September, though dates depend on families. These are genuine ceremonies, not shows: if you're invited, follow the family's lead and ask before photographing. Give the region several days — the drive from Makassar is long, though the local coffee helps.

**And the rest**
Central Sulawesi rewards trekkers and birdwatchers with Lore Lindu National Park and mysterious megalithic monuments on UNESCO's Tentative List. Down south, Bira pairs beaches with traditional boatbuilding. Food-wise, Manado's Minahasan cuisine — fresh fish, plenty of chilli, and tinutuan, a vegetable rice porridge — is worth the trip alone.

**Why go now**
Sulawesi suits travellers who've done Bali and want Indonesia at a slower, deeper pace. The dry season from roughly May to September/October makes road travel and walking comfortable, and aligns with the peak season for Toraja ceremonies. Manado is the gateway for the north, Makassar for the south and highlands, with domestic flights and boats linking the remote bits. The smart move: pick two or three regions rather than trying to tick off the whole island.