Walkway over lava field, Timanfaya Volcano Interpretation and Visitors' Centre, Lanzarote, Canary Islands, Spain, Atlantic, Europe

North Portal of the Cathedral of Our Lady of Chartres, UNESCO World Heritage Site, Chartres, Eure-et-Loir department, Centre region, France, Europe

Coulombs village, Eure-et-Loire department, Centre region, France, Europe

Little girl with a butterfly net in field of barley, Commune de Senantes, Departement d'Eure-et-Loir, Centre, France, Europe

The ruins of the ancient city of Carthage, Tunisia. Founded by the Phoenicians in the ninth century BC, Carthage reached its height in the fourth century BC as the centre of the Carthaginian Empire.

Apartments and houses in the centre of Levanto in the province of Liguria, Italy, Europe

View of buildings in the city centre on a sunny day in winter, Reykjavik, Iceland

Esplora Interactive Science Centre, Bighi, Malta

W5 Science and Discovery Centre reflecting in Belfast Harbour Marina, Belfast, Ulster, Northern Ireland, United Kingdom, Europe

Grizzly bear (Ursus arctos horribilis), Grizzly and Wolf Discovery Centre, West Yellowstone, Montana, United States of America, North America

Captive bald eagle (Haliaeetus leucocephalus), Grizzly and Wolf Discovery Centre, West Yellowstone, Montana, United States of America, North America

Wolf (Canis lupis), Grizzly Discovery Centre, Montana, United States of America, North America

The Daintree Discovery Centre in the Daintree rainforest in the North of Queensland, Australia, Pacific

Werhahnmuehle, restaurant, office and museum building, Legoland Discovery Centre, inner harbour, Duisburg, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

Visitors at the Geyser Interactive Discovery Centre at the world's largest cold water geyser in Andernach, Rhineland-Palatinate, Germany, Europe

Inside the Geyser Interactive Discovery Centre at the world's largest cold water geyser in Andernach, Rhineland-Palatinate, Germany, Europe

Visitor at the Geyser Interactive Discovery Centre at the world's largest cold water geyser in Andernach, Rhineland-Palatinate, Germany, Europe

Visitors at the Geyser Interactive Discovery Centre at the world's largest cold water geyser in Andernach, Rhineland-Palatinate, Germany, Europe

Germany, Berlin, Mitte, Potsdamer Platz, Model of Giraffe outside the Legoland Discovery Centre.