2026-09-06

Waitomo Glowworm Caves, New Zealand

Deep beneath the green hills of Waikato lies a place that seems almost unreal. The Waitomo Glowworm Caves are famous for a dark underground chamber where thousands of tiny blue-green lights shine above visitors like stars in a night sky. The experience is especially memorable because visitors view the glowworms from a quiet boat moving along an underground stream.

Milky Way-like glowworms illuminating a dark cave in New Zealand
A spectacular glowworm cave in New Zealand creates a starry-sky effect, with hundreds of tiny lights glowing against the darkness.

2026-09-05

Death Valley Sailing Stones

On the flat floor of Racetrack Playa in Death Valley National Park, rocks appear to have travelled across the desert by themselves. Some leave long, winding trails behind them, while nearby stones remain exactly where they were. For decades, nobody could watch the rocks move, which made the place one of the strangest natural mysteries in the American West.

Death Valley sailing stone leaving a trail across Racetrack Playa
A sailing stone leaves a long trail across Racetrack Playa in Death Valley.

Blood Falls Antarctica: The Strange Red Waterfall

Deep in Antarctica’s McMurdo Dry Valleys, a strange red stain cuts through a wall of ice. It looks almost like blood spilling from Taylor Glacier, which is why the site became known as Blood Falls. But there is nothing supernatural about it. The strange colour comes from salty water, rich in iron, that has been held captive beneath the glacier for an unusually long time. One of the strangest sights in nature on Earth is when this ancient brine reaches the surface, reacts with oxygen, and turns a rusty red.

Blood Falls flowing from Taylor Glacier into Lake Bonney Antarctica
Blood Falls seeps from the end of Taylor Glacier into Lake Bonney in Antarctica.
© Photo: Peter Rejcek / National Science Foundation — Public Domain

2026-08-29

Lucifer of Liège: The Devil in the Cathedral

Inside St Paul’s Cathedral in Liège, Belgium, a remarkable marble figure sits beneath the arches of the church. With bat-like wings, chains around his body, and a troubled expression, the sculpture looks unlike the usual images of the devil. He is young, handsome, and almost sorrowful. This unusual figure is Le Génie du Mal, or The Genius of Evil, created by Belgian sculptor Guillaume Geefs in 1848. It is often known as the Lucifer of Liège. The sculpture has an unusual story involving two brothers, a controversial earlier statue, and a religious message about the triumph of virtue over evil. Its beauty is perhaps the most surprising part of all.

Lucifer of Liège sculpture by Guillaume Geefs inside St. Paul’s Cathedral
Guillaume Geefs’ Le Génie du Mal, the famous Lucifer sculpture inside St Paul’s Cathedral in Liège.

2026-08-21

The Green Lagoon of Charco de los Clicos, Lanzarote

Charco de los Clicos (also known as Charco Verde or Green Lagoon) is one of the most unusual natural attractions in Lanzarote, Canary Islands, Spain. This stunning lagoon is located inside a volcanic crater adjacent to a black sand beach, close to the coastal village of El Golfo. Its bright green water is a striking contrast against the dark volcanic rocks, red cliffs and deep blue Atlantic Ocean.

Charco de los Clicos green lagoon beside the black beach in Lanzarote
The emerald-green waters of Charco de los Clicos contrast with Lanzarote's black volcanic coastline.

2026-08-18

Vale da Lua, Brazil: The Incredible Moon Valley of Goiás

In the heart of the Brazilian cerrado, there is a landscape that looks like it is from another planet. Vale da Lua, or Moon Valley, is an impressive rock formation in the state of Goiás, close to Alto Paraíso de Goiás. It is one of the most unusual places to visit in Chapada dos Veadeiros National Park, with strange sculpted rocks, narrow channels, natural pools and smooth curves.

The name comes from the rocks' appearance. Over thousands of years, water has worn down the old stone into rounded shapes and winding grooves. Standing among them, it is easy to understand why visitors compare the landscape to the surface of the Moon.

Vale da Lua rock formations in Goiás Brazil
Vale da Lua is renowned for its unusual rock formations in Goiás, Brazil.

2026-08-12

Lake As Pontes: The Artificial Lake of Spain

Nestled in the lush, green landscapes of northwestern Spain, Lake As Pontes (Lago de As Pontes in Spanish, Lago das Pontes in Galician) is one of Europe’s most notable examples of ecological restoration. Once a large open-pit lignite coal mine located in the municipality of As Pontes de García Rodríguez, Galicia, it has been transformed into Spain’s largest artificial lake—a magnificent 865-hectare body of freshwater that represents a transition from industrial activity to environmental renewal.

Lake As Pontes in Galicia Spain
Lake As Pontes is a remarkable artificial lake in Galicia, Spain, created on the site of a former open-pit mine.

2026-08-11

Texas Horned Lizard

Survival traits and conservation of the Texas Horned Lizard? The "horny toad" is a well-known term for the Texas horned lizard, which is one of North America's most iconic reptiles. A flat-bodied animal that thrives in the arid prairies, brushlands and semi-desert areas of the U.S. southwestward into Mexico depends on its extreme adaptations to survive harsh climates and intense predation patterns.

Texas horned lizard resting on rocky sandy soil showing sharp cranial horns and spiky body scales.
The Texas horned lizard utilizes sharp cranial horns and earthy camouflaged scales to stay hidden from desert predators.

The Willamette Meteorite

The Willamette meteorite, referred to as Tomanowos or "Spirit Power" by the Clackamas Chinook people, is the largest space rock found in North America and one of the biggest iron meteorites in the world. It weighs about 15.5 tons (14 metric tonnes), which is equal to roughly 31,000 pounds or 14,150 kilograms. This large interstellar object is approximately 10 feet in length, 6.5 feet in width, and 4.25 feet in height. Its composition includes over 91% iron, 7.6% nickel, and small amounts of cobalt, gallium, germanium, and iridium. It is believed to be a fragment of the metallic core of a differentiated planetesimal that formed in the early stages of the solar system's development.

Willamette Meteorite Tomanowos on museum display
The Willamette Meteorite, also known as Tomanowos, is a massive iron meteorite.

2026-08-08

Spiral Jetty: The Famous Spiral Earthwork in Utah’s Great Salt Lake

Spiral Jetty, Utah, is one of the most unusual and recognisable land artworks in the United States. Built from rocks, mud, and salt crystals, this enormous spiral-shaped sculpture extends into the northeastern shore of the Great Salt Lake in Utah. Created by American artist Robert Smithson in 1970, the work has become an important landmark in the history of contemporary art and one of Utah’s most fascinating attractions.

Unlike a traditional sculpture displayed inside a museum, Spiral Jetty exists within a constantly changing natural landscape. Water levels, weather, sunlight, and the lake’s salty environment can dramatically change its appearance. Occasionally, the structure is partly or completely underwater, while during drier periods its dark rocks and bright salt deposits become clearly visible.

Spiral Jetty extending into the Great Salt Lake in Utah
Spiral Jetty stretches into the Great Salt Lake on Utah’s remote northeastern shore. [Image-Source]

Waitomo Glowworm Caves, New Zealand

Deep beneath the green hills of Waikato lies a place that seems almost unreal. The Waitomo Glowworm Caves are famous for a dark underground...