Most Unique Natural Wonders in the World: Pink Lakes, Geysers & Desert Lagoons

Lençóis Maranhenses is a UNESCO World Heritage Site in northeastern Brazil where vast white sand dunes meet thousands of turquoise lagoons. The lagoons are rain-fed and freshwater, filling the landscape between the dunes in a phenomenon unique enough to feel otherworldly. It's one of the most visually striking places on Earth—the kind of landscape that stops you mid-thought.

The park is accessed from the town of Barreirinhas, and a guide is required for entry. Most visits involve 4x4 vehicles to navigate the dunes, which means you're out exploring for a full day rather than making a quick stop. The silence here is striking: just wind, sand, water, and the occasional bird. There's no busy infrastructure or crowds demanding your attention—it's genuinely vast and quiet.

The lagoons themselves are safe to swim in, and the water is startlingly clear. Photography is permitted, and the landscape rewards it handsomely. Whether you're visiting in the peak season when the lagoons are at their fullest or in the off-season when the park shifts into a different kind of desert beauty, there's something compelling about standing among these dunes.

The Fervedouros are natural spring pools in Jalapão State Park where high-pressure subterranean rivers force water upward through fine sand beds with such intensity that swimmers cannot sink. Located in remote Tocantins, these crystal-clear turquoise pools surrounded by tropical foliage offer one of Brazil's most unusual water experiences. The buoyancy is so powerful that you float effortlessly, suspended in the water while watching sand bubble up from below — a genuinely strange and memorable sensation that most conventional swimming cannot match.

The pools themselves are strikingly photogenic, with that vivid turquoise hue and the contrast of lush vegetation. It's the kind of place where the basic physics of being in water feels different; your body simply will not obey normal swimming behaviour. Entry requires a local guide and 4x4 transport, and visits are managed in small timed groups to protect the ecology. This is not a casual day trip — it demands a bit of planning and commitment — but that structure also means the experience stays intimate and the landscape largely unspoiled.

Visiting is best during the dry season from May to September, when access is most reliable. Admission runs from around 30 BRL per site. You will want to allow 1 to 2 hours or half a day depending on how many springs you visit and how much time you spend floating and taking in the surroundings. The remote location means the infrastructure is minimal but functional: parking and toilets are available, and eco-tourism practices are strictly enforced. This is not a place to turn up on a whim; you need to arrange a guide and transport in advance. But if you're drawn to landscapes and experiences that feel genuinely different, the Fervedouros deliver something you will not find anywhere else.

Fly Geyser is an accidental geothermal wonder born from a mishap in 1964, when an improperly capped well in Nevada's Black Rock Desert allowed pressurized geothermal water to surface and begin depositing minerals. What emerged over decades is a surreal, multi-colored travertine cone that looks more extraterrestrial than earthly: vivid neon greens and reds coat its surface, the result of thermophilic algae that thrive in the hot, mineral-rich water. Steam vents continuously release plumes into the arid desert air, creating a stark contrast against the barren brown landscape.

Visiting requires advance planning. The geyser sits on private land, so access is only through authorized guided tours, typically organized seasonally. Booking online in advance is essential. Spring and autumn are considered the best seasons to visit. A typical visit lasts 1–2 hours and works well for solo travellers, couples, or friends looking for something genuinely unusual.

The experience is primarily photographic and scenic—the alien-like appearance makes it highly Instagram-worthy, and photography is permitted. What strikes most visitors is the sheer strangeness of the place: a vivid, otherworldly formation in the middle of an empty, expansive desert. It is not a traditional natural wonder, but rather a reminder of how geology and unintended human intervention can create something genuinely one-of-a-kind.

Parking is available at the tour location. Because access is restricted and seasonal, this is not a casual drop-by destination. But for travellers interested in unusual geological phenomena and willing to book ahead, Fly Geyser delivers an experience unlike anywhere else in the region.

Hutt Lagoon is a bright pink salt lake in Western Australia, near Port Gregory, where vibrant algae creates one of the country's most striking natural colours. The intensity of the pink shifts with the light and time of day, making it a popular photography stop on coastal road trips. The colour comes from Dunaliella salina, an algae that thrives in the lake's high salinity. Ground-level viewing points offer good vantage, though aerial views showcase the full dramatic contrast between the pink water and the surrounding blue ocean.

Visitors often spend 1–2 hours here, and the best time to see the colour is on a sunny day during late morning to early afternoon when the pink is most vivid. The lake also functions as a salt production site, which means some areas have limited access. Parking is available on-site.

The location is fairly remote—about 6 hours north of Perth—so it works well as a stop on a longer road trip rather than a day trip from the city. Bring supplies before you arrive. The experience suits solo travellers, couples, families and groups, and photography is welcome.

Paisu Pok Lake is a crater lake on Peleng Island in Central Sulawesi with water so clear you can see the lake floor 10 to 15 metres down. The exceptional clarity comes from the fact that it's a closed freshwater system with no ocean connection, meaning no saltwater sediment or disturbance. The local name means "black water" in Banggai—a reference to the dark-coloured lake bed visible through the glass-like surface, not the water itself. Despite gaining some social media attention, it remains rarely visited by foreign tourists due to its remote location on an island that requires multiple transport connections to reach.

The setting is striking: dense tropical jungle surrounds the crater, and the water shifts colour with the time of day and sun angle, which is why afternoons are prized for photography. You can swim, snorkel, canoe, or paddleboard here. The area has minimal commercialisation—no large resorts or developed tourist infrastructure. There's a basic entrance fee (5,000 IDR), parking and toilet facilities on-site, and you can rent canoes, paddleboards, snorkeling gear, gazebos, or stay overnight camping or in homestay accommodation. Most of the journey is getting there: you'll fly into Luwuk airport, take a ferry or speedboat to Peleng Island, then drive roughly 23 kilometres to the lake.

Visits typically take 1–2 hours to half a day, though you could easily spend longer. The lake works for solo travellers, couples, families and groups. The dry season (April to November) offers the best conditions, and weekdays are quieter than weekends. One practical note: there are no ATMs nearby, so bring sufficient cash in small bills. English is not widely spoken, so a local guide is worth arranging.