England, Greater London, City of Westminster. The National Gallery located in Trafalgar Square, a popular tourist destination in London, photographed at dusk.

England, Greater London, City of Westminster. London Barclays Cycle Hire docking station located near the Theatre Royal Haymarket in the city of London. The London Cycle Hire scheme has been nicknamed 'Boris Bikes' after the present mayor, Boris Johnson, who introduced the scheme.

England, Greater London, City of Westminster. Queens' Guard walking towards archway outside Buckingham Palace.

Spain, Catalonia, Pyrenees, Pedraforca. Saldes in the shadow of the Pedraforca Mountain in the heart of the Cadí-Moixeró Natural Park.

Spain, Catalonia, Pyrenees, Pedraforca. The Pedraforca Mountain in the heart of the Cadí-Moixeró Natural Park.

Spain, Catalonia, Pyrenees, Pedraforca. The Pedraforca Mountain in the heart of the Cadí-Moixeró Natural Park.

Spain, Catalonia, Pyrenees, Pedraforca. The Pedraforca Mountain in the heart of the Cadí-Moixeró Natural Park.

Spain, Catalonia, Pyrenees, Pedraforca. The Pedraforca Mountain in the heart of the Cadí-Moixeró Natural Park.

Spain, Catalonia, Pyrenees, Pedraforca. The Pedraforca Mountain in the heart of the Cadí-Moixeró Natural Park.

Spain, Catalonia, Pyrenees, Pedraforca. The Pedraforca Mountain in the heart of the Cadí-Moixeró Natural Park.

Spain, Catalonia, Pyrenees, Pedraforca. The Pedraforca Mountain in the heart of the Cadí-Moixeró Natural Park.

Spain, Catalonia, Pyrenees, Gósol. A storm brews above the village of Gosol in the Catalonian Pyrenees mountains.

Spain, Catalonia, Pyrenees, Gósol. Houses in the village of Gosol in the Catalonian Pyrenees mountains.

England, Greater London, City of Westminster. The iconic Big Ben also known as the Clock Tower, part of the House of Parliament building (also known as the Palace of Westminster), located in the City of Westminster, London.

England, Greater London, City of Westminster. The iconic "Big Ben" also known as the Clock Tower, part of the House of Parliament building (also known as the Palace of Westminster), located in the City of Westminster, London.

England, Greater London, Pool of London. The iconic Tower Bridge which spans the River Thames near the Tower of London.

England, Greater London, Pool of London. The iconic Tower Bridge which spans the River Thames near the Tower of London.

England, Greater London, Pool of London. The iconic Tower Bridge which spans the River Thames near the Tower of London.

England, Greater London, St Katharine Docks. Modern art consisting of enamel panels designed by Dale Devereux Barker, located along Cloisters's Walk in the St Katharine Docks.

England, Greater London, The City of London. The contrasting architecture of the St Andrew Undershaft Church against a backdrop of the famous Gherkin building.

England, Newcastle upon Tyne, The Tyne Bridge. The iconic Tyne Bridge, stretching across the River Tyne Quayside.

England, Newcastle upon Tyne, The Tyne Bridge. The iconic Tyne Bridge, stretching across the River Tyne Quayside.

England, Newcastle upon Tyne, The Tyne Bridge. The iconic Tyne Bridge, stretching across the River Tyne Quayside.

England, Newcastle upon Tyne, The Sage. Interior view of the Sage, an iconic building on the Newcastle Upon Tyne / Gateshead Quayside.

England, Newcastle upon Tyne, The Sage. Interior view of the Sage, an iconic building on the Newcastle Upon Tyne / Gateshead Quayside.

Italy, Lazio, Rome. Plants on a typical Rome residential apartment balcony.

Italy, Lazio, Rome. Plants on a typical Rome residential apartment balcony.

Italy, Lazio, Rome. Plants on a typical Rome residential apartment balcony.

Italy, Lazio, Rome. Ancient Rome architecture in the City of Rome near the Piazza Bocca della Verita.

Italy, Lazio, Rome. Ancient Rome architecture in the City of Rome near the Piazza Bocca della Verita.

Italy, Lazio, Rome. View looking across the city of Rome, from Aventine hill towards the National Monument of Victor Emmanuel II.

Italy, Lazio, Rome. Tourist in the Colosseum or Roman Coliseum, originally the Flavian Amphitheatre

Italy, Lazio, Rome. Tourists buying souvenirs from a stall by the Colosseum or Roman Coliseum, originally the Flavian Amphitheatre

Italy, Lazio, Rome. Tourists in the Colosseum or Roman Coliseum, originally the Flavian Amphitheatre

Italy, Lazio, Rome. Tourists visiting the Colosseum or Roman Coliseum, originally the Flavian Amphitheatre

Italy, Lazio, Rome. Constantine Arch near the Colosseum or Roman Coliseum, originally the Flavian Amphitheatre

Italy, Lazio, Rome. Constantine Arch near the Colosseum or Roman Coliseum, originally the Flavian Amphitheatre

Italy, Lazio, Rome. Trees and the Constantine Arch near the Colosseum or Roman Coliseum, originally the Flavian Amphitheatre

Italy, Lazio, Rome. Italian Police Parade on the Piazza Quirinale in front of the Presidential Palace

Italy, Lazio, Rome. Brass band on Police Parade near the Piazza Quirinale in front of the Presidential Palace

Italy, Lazio, Rome. Italian Police Parade on the Piazza Quirinale in front of the Presidential Palace

Italy, Lazio, Rome. Italian Police Parade on the Piazza Quirinale in front of the Presidential Palace

Italy, Lazio, Rome. Italian Police Parade on the Piazza Quirinale in front of the Presidential Palace

Italy, Lazio, Rome. Italian Police Parade on the Piazza Quirinale in front of the Presidential Palace

Italy, Lazio, Rome. Detail shot of hand and glove belonging to a police officer on the Piazza Quirinale in front of the Presidential Palace

Italy, Lazio, Rome. Italian Police Parade on the Piazza Quirinale in front of the Presidential Palace

Italy, Lazio, Rome. Italian Police Parade on the Piazza Quirinale in front of the Presidential Palace

Italy, Lazio, Rome. Italian Police Parade on the Piazza Quirinale in front of the Presidential Palace

Italy, Lazio, Rome. Italian Police Parade on the Piazza Quirinale in front of the Presidential Palace

Italy, Lazio, Rome. The Colosseum or Roman Coliseum, originally the Flavian Amphitheatre