Tourists watch Changing of the Guard at Buckingham Palace, London, England, United Kingdom, Europe

Changing of the Guard ceremonies at Buckingham Palace, London, England, United Kingdom, Europe

Changing the Guard, St. James Palace, London, England, United Kingdom , Europe

Policemen performing changing of guards ceremony in front of La Moneda Palace, Santiago, Santiago Metropolitan Region, Chile, South America

Policemen performing changing of guards ceremony in front of La Moneda Palace, Santiago, Santiago Metropolitan Region, Chile, South America

Policemen performing changing of guards ceremony in front of La Moneda Palace, Santiago, Santiago Metropolitan Region, Chile, South America

Policemen marching to La Moneda Palace for changing of guards ceremony, Santiago, Santiago Metropolitan Region, Chile, South America

Soldiers of the Queen's Lifeguard at the Changing of the Guard on Horse Guard's Parade, London, England, United Kingdom, Europe

Stoat (Mustela erminea), in a meadow with hoarfrost, making male, changing coat from summer to winter coat, biosphere reserve, Swabian Alb, Baden-Wuerttemberg, Germany, Europe

Stoat (Mustela erminea), jumping in a meadow with hoarfrost, changing coat from summer to winter coat, biosphere reserve, Swabian Alb, Baden-Wuerttemberg, Germany, Europe

Snowshoe hare (Lepus americanus) changing fur winter, summer, detailed view, Yukon Territory, Canada, North America

Stoat (Mustela erminea), jumping in a meadow with hoarfrost, changing coat from summer to winter coat, biosphere reserve, Swabian Alb, Baden-Wuerttemberg, Germany, Europe

Willow Ptarmigan male (Lagopus lagopus) turning into his summer colours from his white winter's coat, Denali National Park and Preserve; Alaska, United States of America