Nguen Thi Minh Khai high school, Ho Chi Minh City (Saigon), Vietnam, Indochina, Southeast Asia, Asia

Riders with high-stepping horses and hound, Meigle n°11 (detail), Meigle Pictish Museum, near Forfar, Angus, Scotland, United Kingdom, Europe

Riding Elephants, Old Delhi, India

In the 13th century, the golden age of the mongol empire, a sport resembling polo became a training game for the mongolian cavalry throughout high asia. horsemen learned to bend low at speed, like acrobats to finish off fallen enemies with sabres, looting their prey on the ground by scooping up jewels that caught their eye. there are stories, too, of genghis khan knocking about an enemys head as if it were a ball. orkhon valley, central mongolia

Walkers and horse riders on the High Peak Tissington Trail, Peak District National Park, Derbyshire, England, United Kingdom, Europe

Mountainbikers descending an S-curve, Downhill Biking, Deathroad, Altiplano, La Paz, Bolivia, South America

Racing cyclists on Passo Gardena mountain pass, Sella Ronda Bikeday, Val Gardena, Alto Adige, Dolomites, Italy, Europe

General Baquedano, monument, Plaza Baquedano, Movistar building in the form of a mobile phone, telephone company, skyscraper, Santiago de Chile, Chile, South America

Aerial view, Deutsches Eck, German Corner, Mosel and Rhine rivers, Bundesgartenschau 2011, Federal Garden Show 2011, "Koblenz verwandelt", German for "Koblenz transforms", April to October 2011, Koblenz, Rhineland-Palatine, Germany, Europe

Polo, polo players chasing after a ball, polo competition, Berenberg High Goal Trophy 2008, Thann, Holzkirchen, Upper Bavaria, Bavaria, Germany, Europe

Polo player, Polo tournament, Berenberg High Goal Trophy 2007, Thann, Holzkirchen, Upper Bavaria, Bavaria, Germany

View over an artificial lake towards people in front of a monument with an equestrian statue of King Alfosno XII, Parque del Buen Retiro, Park of the Pleasant Retreat or El Retiro, Madrid, Spain, Europe

Polo player, Polo tournament, Berenberg High Goal Trophy 2007, Thann, Holzkirchen, Upper Bavaria, Bavaria, Germany

Steep stairs from the port to Fira, tourists riding on mules, Santorini, Thira, Cyclades, Greece, Europe

International German Gymnastics Festival 2009 procession, mounted Police, Frankfurt am Main, Hesse, Germany, Europe

Fountain with a spout in front of the Alte Oper, old opera, Frankfurt, Hesse, Germany, Europe

The old Puerto Madero harbor, Puerto Madero district, Buenos Aires, Argentina, South America

General Baquedano, monument, Plaza Baquedano, Movistar building in the form of a mobile phone, telephone company, skyscraper, Santiago de Chile, Chile, South America

Jose Artigas equestrian statue, Plaza Independencia, Montevideo, Uruguay, South America

Place Guillaume II square with equestrian statue of Wilhelm II in Luxembourg City, Luxembourg, Europe

Mountain bikers cycling in Goereme, Cappadocia, Turkey

Marathon, Stuttgart, Baden-Wuerttemberg, Germany, Europe

Tourists looking down on the Geiranger fjord, Norway, Europe

Heavy traffic with rickshaws at an intersection in Dhaka, Bangladesh, Asia

Aerial view, Deutsches Eck, German Corner, Mosel and Rhine rivers, Bundesgartenschau 2011, Federal Garden Show 2011, "Koblenz verwandelt", German for "Koblenz transforms", April to October 2011, Koblenz, Rhineland-Palatine, Germany, Europe

Tunnel through the Hochtor Mountain, Grossglockner High Alpine Mountain Road, Hohe Tauern National Park, Salzburg, Austria, Europe

Monument of Russian Prince Yuri Dolgoruki, Moscow, Russia

Plaza de Armas, Santiago de Chile, Chile, South America

Plaza de Armas, Santiago de Chile, Chile, South America

Palais Thurn und Taxis in front of the office tower project PalaisQuartier, Thurn and Taxis Platz, Frankfurt, Hesse, Germany, Europe

A man rides an antique high wheel bicycle near the Congregational Church of Amherst following the town's July 4 parade, Amherst, New Hampshire, USA

Eagle Street Pier at Brisbane River, Brisbane, Queensland, Australia

UNO City at the Danube from Reichsbruecke bridge, Vienna, Austria, Europe

Oregon, United States Of America; A Road Through The Columbia River Gorge National Scenic Area

High angle view of a woman wearing a white cowboy hat and riding a horse at the Calgary Stampede, Calgary, Alberta, Canada