Portugal, Porto, View over Porto and Vila Nova de Gaia from the Torre de Clerigos.

Portugal, Porto, Torre de Clerigos seen from the Terreiro da Se which is the square in front of Porto Cathedral.

Portugal, Porto, Torre de Clerigos seen from the Terreiro da Se which is the square in front of Porto Cathedral with the statue known as O Porto or the Wandering Warrior in the foreground.

Portugal, Porto, Torre de Clerigos seen from the Terreiro da Se which is the square in front of Porto Cathedral.

Republic of Ireland, County Galway, Cattle sheltering behind rocks below a windfarm near the village of An Spideal.

Republic of Ireland, County Mayo, Downpatrick Head or Dun Briste meaning Broken Fort is an impressive sea stack at the headland.

Republic of Ireland, County Donegal, Sea cliffs at Slieve League which at 601 metres or 1,972 feet are the second-highest sea cliffs in Ireland and some of the highest sea cliffs in Europe.

Republic of Ireland, County Donegal, Sea cliffs at Slieve League which at 601 metres or 1,972 feet are the second-highest sea cliffs in Ireland and some of the highest sea cliffs in Europe.

Singapore, Singapore City, Boat Quay at night with Elgin Bridge Raffles Place skyline behind .

England, Lancashire, Liverpool, The Wheel of Liverpool with the Royal Albert Dock in the background and the M&S Bank Arena on the left.

England, Lancashire, Liverpool, Royal Albert Dock with the Three Graces in the background.

England, Lancashire, Liverpool, England, Lancashire, Liverpool, Royal Albert Dock, the Martin Luther King Jr Building which from 1847 served as the Albert Dock Traffic Office.