Jungle at Arenal Hanging Bridges where rainforest canopy is accessible via walkways, La Fortuna, Alajuela Province, Costa Rica, Central America

Sheffield trams (Supertram) approaching a stop in Church Street, Cathedral Quarter, Sheffield, Yorkshire, England

Buttress root in jungle at Arenal Hanging Bridges where rainforest canopy is accessible via walkways, La Fortuna, Alajuela Province, Costa Rica, Central America

Monsaraz, Reguengos de Monsaraz, Evora district, Alentejo, Portugal, Europe

Jungle at Arenal Hanging Bridges where rainforest canopy is accessible via walkways, La Fortuna, Alajuela Province, Costa Rica, Central America

Waterfall at Arenal Hanging Bridges where the rainforest is accessible via walkways, La Fortuna, Alajuela Province, Costa Rica, Central America

Jungle at Arenal Hanging Bridges where rainforest canopy is accessible via walkways, La Fortuna, Alajuela Province, Costa Rica, Central America

Waterfall at Arenal Hanging Bridges where the rainforest is accessible via walkways, La Fortuna, Alajuela Province, Costa Rica, Central America

A climber makes her way up the summit ridge of Stok Kangri at 6137 metres, a popular and easily accessible trekking peak in the northern Zanskar Range, Ladakh, India, Asia

Zubizuri Footbridge, designed by Santiago Calatrava, Nervion River, Bilbao, Basque Country, Spain, Europe

Playa Las Tumbas, Cabo San Antonio, Guanahacabibes Peninsular, National Park and Biosphere Reserve, Pinar del Rio Province, Cuba, West Indies, Central America

Caravan (Trailer) at the camping area of Sand Hollow State Park, opened in 2003, covering 20000 acres, near St. George, Utah, United States of America, North America

Sign marking Badger Springs Road off of I-17 Arizona. This road leads to a hiking trail in the Agua Fria National Monument.

Alp Grum, Canton of Grisons, Switzerland

Serra de Tramuntura, hiker on Puig de Massanella Mallorca's highest accessible peak, Majorca, Balearic Islands, Spain, Mediterranean, Europe

Serra de Tramuntura, hiker on Puig de Massanella, Mallorca's highest accessible peak, Majorca, Balearic Islands, Spain, Mediterranean, Europe

Close up of the eastern half of Mitten Ridge, accessible by way of the Hangover Trail, Sedona, Arizona, United States of America, North America

Briksdal glacier, one of the most accessible and best known arms of the Jostedalsbreen glacier, Stryn, Vestland, Norway, Scandinavia, Europe

View of Waldron Canyon southwest of Hermit Canyon in winter, accessible via Hermit Trail, Grand Canyon, Arizona, United States of America, North America

Off trail view of Waldron Canyon southwest of Hermit Canyon in winter, accessible via Hermit Trail to the Waldron Trail Junction, Grand Canyon, Arizona, United States of America, North America

Views of rental bicycles on the Bergen Railway route from Myrdal to the town of Flam, Norway, Scandinavia, Europe

Views of the Signpost just outside of Stanley, the capital and only true city in the Falkland Islands, South Atlantic Ocean, South America

View of Long Island one of the most undisturbed in the world, the island is home to a private resort accessible only by boat, Antigua, Leeward Islands, West Indies, Caribbean, Central America

The beach and multi-coloured cliffs at Alum Bay, accessible by chairlift, Isle of Wight, Hampshire, England, United Kingdom, Europe

The 6904ft 'Beehives' in the western walls of the south end of Zion Canyon, in the most accessible part of this stunning national park with its 2000-3000ft sandstone walls, Zion National Park, Utah, United States of America (USA), North America

The 6904ft 'Beehives' in the western walls of the south end of Zion Canyon, in the most accessible part of this stunning national park with its 2000-3000ft sandstone walls, Zion National Park, Utah, United States of America (USA), North America

Looking south past the 6545ft 'Watchman' from Zion Canyon, the most accessible part of this stunning national park with its 2000-3000ft sandstone cliffs, Zion National Park, Utah, United States of America (USA), North America

Sign, handicapped accessible path, Tenerife, Canary Islands, Spain, Europe

Blue marked parking place for disabled people, Romania, Europe

Close-up of a closed door of a house

Rear view of a young man taking a photograph, Haleakala National Park, Maui, Hawaii Islands, USA

Close-up of a door handle on a door, Positano, Amalfi Coast, Salerno, Campania, Italy

A male mountaineer is standing on the summit of the Barrhorn, a mountain peak of 3610 meter in the Swiss Alps. It is one of the highest summits in Europe to be accessible to experienced hikers. The region of Wallis is home to over 40 mountain peaks higher than 4000 meter. The highest one that is completely situated within the Swiss borders is the Dom, which is visible in the background. The Mattertal runs from Visp all the way to Zermatt and is a paradise for all outdoor enthusiasts, like hikers, climbers, alpinists, walkers, mountain bikers and nature lovers.

Railay Beach is a popular tourist destination near Krabi, Thailand on the Andaman Sea. Accessible only by boat, the beach includes a number of high end resorts for tourists from around the world.

A boardwalk path leads hikers through the hiking route on the Vatnajokull National Park plateau, Iceland

Sunrise over Paoakulani Isle, Moku Puka Isle and Pa'alaea Islands seabird sanctuaries, Pololu Valley Lookout, North Kohala, Hamakua Coast. This area is only accessible by boat, Island of Hawaii, Hawaii, United States of America

Cables, Mont Blanc, Aiguille Du Midi, Chamonix, France

Man who had Spinal Meningitis pulling his wheelchair into his accessible vehicle