20 Natural Wonders in Indonesia
Indonesia’s natural wonders split cleanly into five categories - volcanoes, waterfalls, reefs, highland lakes, and rainforest - and almost no single trip covers all five. Here’s what’s actually worth building a detour for, grouped by type instead of by island, since the type tells you what gear and timing you need.
Volcanoes & craters
- Mount Bromo, East Java - the signature Indonesia volcano shot: pre-dawn viewpoint hike, crater rim, sea-of-clouds beneath. Climbed pre-dawn specifically for that light. Verdict: worth the 3am wake-up once; it’s the single most photographed landscape in the country for a reason.
- Kawah Ijen, East Java - the “blue fire” crater, sulfuric gas that combusts blue in full darkness, plus a turquoise crater lake by daylight. Verdict: worth it only if you’re already routing through the Bromo/East Java circuit - not a standalone detour from Bali.
- Mount Rinjani, Lombok - Indonesia’s second-highest volcano, with a crater lake (Segara Anak) inside the caldera. Multi-day trek, not a day hike. Verdict: for trekkers with 2-3 spare days on Lombok; skip if you’re only passing through for the Gilis.
- Mount Batur, Bali - Bali’s own sunrise volcano hike, shorter and easier than Rinjani. Verdict: the practical Bali-based alternative to Bromo if you’re not routing through Java.
- Anak Krakatau, Sunda Strait - the active volcanic island that emerged from Krakatoa’s collapsed caldera. Boat-access only, and activity level varies year to year. Verdict: check current activity status before planning around it; it’s not always safe to approach.
- Kelimutu, Flores - three volcanic crater lakes side by side, each a different color (rust, teal, near-black) that shifts over months due to mineral chemistry. Verdict: a genuine only-here sight, worth building a Flores leg around if you’re already near Komodo.
Waterfalls
- Tumpak Sewu, East Java - a horseshoe-shaped waterfall often called Indonesia’s Niagara. Requires a short river wade to get close. Verdict: the best waterfall in the country; worth a dedicated day from Malang.
- Madakaripura Waterfall, East Java - a narrow canyon waterfall near Bromo, walk-in through a gorge. Verdict: easy add-on to a Bromo trip since it’s on the same route.
- Sekumpul Waterfall, Bali - Bali’s tallest and most scenic falls, a multi-tier cascade reached by a steep jungle trail. Verdict: worth the hike if you’re based in north Bali; too far as a day trip from Seminyak or Canggu.
- Gitgit Waterfall, Bali - a shorter, easier-access falls near Sekumpul. Verdict: the fallback if Sekumpul’s trail is more than your group wants to handle.
- Sendang Gile & Tiu Kelep, Lombok - twin waterfalls near Mount Rinjani’s base. Verdict: pairs naturally with a Rinjani trek; skip if you’re Gili-only.
Reefs & marine parks
- Raja Ampat, West Papua - widely cited as having the highest marine biodiversity on the planet. Remote and expensive to reach relative to Bali or Lombok. Verdict: for a dedicated diving trip, not a Bali add-on - the flights alone take real planning.
- Bunaken National Park, North Sulawesi - a wall-diving reef system, less crowded than Bali’s dive sites. Verdict: for divers already routing through Sulawesi; not a standard first-timer stop.
- Komodo National Park waters, Flores - the reefs around Komodo Island include a pink-sand beach and manta ray cleaning stations. Verdict: pairs directly with the Komodo dragon boat trip from Labuan Bajo, covered with real tour prices in the Komodo National Park guide - don’t visit one without the other.
- Gili Islands reefs, Lombok - shallow, calm-water snorkeling with regular turtle sightings, no dive certification needed. Verdict: the easiest reef access in the country for non-divers.
- Nusa Penida (Manta Point & Crystal Bay), Bali - manta ray viewing and clear-water snorkeling as a day trip off Bali. Verdict: the highest reef-value day trip you can do without leaving Bali proper, see the Nusa Penida day trip guide for which tour to book.
- Wakatobi, Southeast Sulawesi - a marine national park considered one of the world’s top dive destinations. Verdict: remote and specialist; only for trips built specifically around diving.
Lakes, highlands & rainforest
- Lake Toba, North Sumatra - the largest volcanic lake in the world, formed by a supervolcanic eruption, with Samosir Island sitting inside it. Verdict: worth it for Sumatra-focused trips; too far a detour from a Bali-Java-Lombok loop.
- Dieng Plateau, Central Java - a high-altitude volcanic plateau with colored crater lakes and an early-morning “golden sunrise” viewpoint. Verdict: a reasonable add-on if you’re already based in Yogyakarta for the temples.
- Tanjung Puting National Park, Central Kalimantan - Borneo rainforest reached by a multi-day river boat (klotok), known for wild orangutan viewing. Verdict: its own trip, not an add-on - budget several days and treat it as a Borneo-specific itinerary.
How to actually choose from this list
Nobody sees all 20 in one trip, so filter by what you’re already routing through:
| If your trip includes | Prioritize |
|---|---|
| Bali only | Mount Batur, Nusa Penida, Sekumpul/Gitgit |
| Bali + East Java (Bromo) | Bromo, Ijen, Tumpak Sewu, Madakaripura |
| Lombok/Gilis | Rinjani, Sendang Gile/Tiu Kelep, Gili reefs |
| Flores/Komodo | Kelimutu, Komodo reefs |
| Dedicated diving trip | Raja Ampat, Bunaken, Wakatobi |
Season matters as much as region here. Dry season (April to October) is the reliable window for volcano hikes and reef visibility alike, since clear skies make crater viewpoints and underwater visibility both more consistent - July and August are the busiest months in that stretch, so book trekking permits and boat trips early if your dates fall there. Wet season’s afternoon showers rarely cancel a sunrise hike outright, but they do occasionally cloud out the summit view you climbed for, so build in a spare day if a specific volcano or crater lake is the whole point of the stop.
For the broader first-trip framing this list slots into, see the first-timer’s Bali and Indonesia guide. For a different cut of the country’s best sights organized by island instead of landform, see 15 scenic destinations in Indonesia. Mount Batur and Nusa Penida both carry real depth on Viator specifically, dozens of Batur sunrise treks and a 200-review Nusa Penida dive trip, worth checking alongside Klook and GetYourGuide when booking either.
Book these while you’re there
Bali: Monkey Forest, Rice Terraces & Waterfall Day Trip
Mount Batur Sunrise Trekking Experience
PRIVATE Authentic Balinese Cooking Class in Ubud at Putu's Home
Uluwatu Private Tour: GWK, Beach & Sunset Kecak Dance
Tropical Temptation TT Beach Club Pass in Bali
Ubud Tour - Ubud Highlight - Private Tour All inclusive
Bali: Kintamani Sunrise Jeep Tour & Ubud Swing Experience
Canyoning Water Adventure Experience in North Bali
#natural wonders#indonesia#volcanoes#waterfalls
Frequently Asked Questions
What is the most famous natural wonder in Indonesia?
Mount Bromo, for the pre-dawn crater-and-sea-of-clouds view over the Tengger caldera in East Java. Komodo National Park runs a close second for anyone prioritizing wildlife and reefs over volcanic landscape.
Is Kawah Ijen's blue fire worth the 2am hike?
Yes, but only if you're already committed to the volcano circuit through East Java - the blue flame is real (sulfuric gas combustion, not a photo trick) and only visible in full darkness. If it's a detour from a Bali-only trip, skip it; the logistics eat a full day for one narrow viewing window.
Are Indonesia's waterfalls worth visiting outside Bali?
The East Java waterfalls (Tumpak Sewu, Madakaripura) are more dramatic than anything in Bali and worth the extra travel if you're already routing through Malang or Bromo. If your trip is Bali-only, Sekumpul and Gitgit cover the waterfall box without the detour.
Do I need to dive to see Indonesia's best reefs?
No - snorkeling covers most of the highlight list (Gili Islands, Nusa Penida's Manta Point, parts of Bunaken). Raja Ampat and Wakatobi reward diving specifically, so save those for a trip built around diving rather than a general island-hopping itinerary.