35,000 walruses,Point Lay, Alaska: The image shows 35,000 walruses gathered on the shore, five miles north of Point Lay, Alaska. Environmental experts say the photograph is dramatic proof of changing environmental conditions that result from sea ice loss. The accelerating retreat of Alaskan sea ice north into the Arctic Ocean severely impacts the walruses who rely on it for everything from giving birth to diving to hunt for food.

Lover's Island Galešnjak, Croatia. Galesnjak - commonly known as “Lover’s Island” - is a naturally occurring, heart-shaped isle off the coast of Croatia.

Seaweed Farms Nusa Lembongan, Indonesia. Seaweed farms on Nusa Lembongan – a small island located southeast of Bali, Indonesia – have an average harvest of 50,000 pounds per month.

Ice Runway McMurdo Sound, Antarctica. The Ice Runway on the McMurdo Sound of Antarctica is the primary airplane landing strip for the US Antarctic Program. Constructed on top of the frozen water at the start of each season, the runway is used until early December when the sound begins to break up.

A guitar-shaped forest,Laboulaye, Argentina. For years, a couple by the name of Pedro Ureta and Graciela Yraizoz discussed the idea of creating such a design. However, when Graciela suddenly passed away, Pedro and their four children planted 7,000 cypress (the body of the instrument) and eucalyptus (the strings) trees in her honor. The guitar was her favorite instrument.

Australia Day Bondi Beach. One of the city’s most popular destinations, the beach gets its name from the Aboriginal word “Bondi” that means waves breaking over rocks.

Niagara Falls Border of Ontario, Canada and New York, United States. Niagara Falls is the collective name for three waterfalls that straddle the border between Ontario, Canada and the United States. The falls have the highest flow rate of any waterfall in the world, with a vertical drop of more than 165 feet (50 m). The Maid of the Mist boat, visible here, has carried passengers into the rapids immediately below the falls since 1846.

Stelvio Pass Northern Alps, Italy. The Stelvio Pass is a road in northern Italy that is the highest paved roadway in the Eastern Alps with an elevation of 2,757 m (9,045 ft) above sea level. Only accessible in the summer months (June-September), the road and its 75 hairpin turns are sometimes scaled during the famous Giro d’Italia cycling race.

Pineapple Garden Maze Wahiawa, Hawaii, USA. The Pineapple Garden Maze at the Dole Plantation in Wahiawa, Hawaii, USA is one of the world’s largest mazes. The labyrinth stretches over three acres and includes nearly two and a half miles of paths crafted from 14,000 plants.

Nile River Delta Egypt - The Nile River Delta covers approximately 240 kilometers (150 miles) of the Egyptian coastline and the region contains about half of Egypt’s 80 million people.

Magdeburg Water Bridge Magdeburg, Germany. As the largest bridge of its kind in Europe, it spans the Elbe River to directly connect two canals, allowing large commercial ships to pass between the Rhineland and Berlin without having to descend into and then out of the Elbe. The structure was built with 24,000 tons of steel and 68,000 cubic meters of concrete.

Green Cathedral Almere, Netherlands. The Green Cathedral or De Groene Kathedraal located near Almere, Netherlands, is an artistic planting of 178 Lombardy poplar trees. The “Cathedral” is 150 m (490 ft) long and 75 m (246 ft) wide, which mimics the exact size and shape of the Cathedral of Notre-Dame, in Reims, France.

"Wish" Belfast, Ireland. Wish” is a land-art portrait spanning 11 acres in Belfast, Ireland. Created by artist Jorge Rodriguez-Gerada, the work represents the youth's ability to look towards the future.

Grand Prismatic Spring Yellowstone National Park, Teton County, Wyoming, USA. At the Grand Prismatic Spring in Yellowstone National Park, visitors can get a close-up view on a series of elevated boardwalks. The hot spring gets its vivid color from pigmented bacteria that grow around the edge of the mineral-rich water.

Burning Man Black Rock City, Black Rock Desert, Nevada, USA. Burning Man is a week-long, annual event held in the Black Rock Desert of Nevada, USA. Drawing more than 65,000 participants in 2014, the event is described as an experiment in community, art, radical self-expression, and radical self-reliance.

Costa Concordia Shipwreck Isola del Giglio, Italy. The Costa Concordia was a Italian cruise ship that wrecked off the coast of Isola del Giglio in Italy on January 13, 2012.

Mount Taranaki North Island, New Zealand. Mount Taranaki, also known as Mount Egmont, is an active stratovolcano on the west coast of New Zealand’s North Island.

Recession of the Dead Sea Neve Zohar, Israel. In recent decades, the water level of the Dead Sea has been dropping at more than 3 feet per year due to the extraction of raw materials and the diversion of water to the north.

Los Caracoles Pass Los Andes, Chile. Los Caracoles Pass (or “Snails Pass”) is located in a remote section of the Andes Mountains on the Chilean side of the border with Argentina. The twisting road climbs to an elevation of 10,419 feet, has no roadside safety barriers, and is frequented by large trucks.

King Khalid International Airport Riyadh, Saudi Arabia

Erosion Betsiboka River, Madagascar. Dramatic evidence of the catastrophic erosion in northwestern Madagascar is seen at the rapidly expanding Betsiboka River Delta.

Eixample District Barcelona, Spain. Eixample - a district in the city of Barcelona, Spain - is characterized by its strict grid pattern, octagonal intersections, and apartments with communal courtyards.