France, Aveyron 12, Millau, The Viaduct at Millau.

France, Aveyron 12, Millau, The Viaduct at Millau.

USA, New York City, Manhattan, New York Fire Department Memorial Wall, Engine 10, Ladder 10, World Trade Center.

USA, New York City, Manhattan, One of the two waterfalls at National September 11 Memorial, World Trade Center.

USA, New York City, Manhattan, One of the two waterfalls at National September 11 Memorial, World Trade Center.

USA, New York City, Manhattan, Four World Trade Center also known as Tower 4 and 150 Greenwich Street.

USA, New York City, Manhattan, One of the two waterfalls at National September 11 Memorial, World Trade Center.

USA, New York City, Manhattan, One of the two waterfalls at National September 11 Memorial, World Trade Center.

USA, New York City, Manhattan, One of the two waterfalls at National September 11 Memorial, World Trade Center.

USA, New York City, Manhattan, One of the two waterfalls at National September 11 Memorial, World Trade Center.

USA, New York City, Manhattan, One World Trade Center also known as Tower 1 and Freedom Tower.

USA, New York, Lower Manhattan, One World Trade Center skyscraper, the tallest building in the city.

Germany, Hesse, Idstein, Hexenturm or The Witches Tower is one of the oldest surviving buildings in Idstein as well as the tallest.

Germany, North Rhine-Westphalia, Dusseldorf, View of the waterfront Promenade from the Rheinturm or Rhine Tower which is the city's tallest building.

France, Midi Pyrenees, Millau Bridge, The tallest motorway bridge over the Tarn valley.

Holland, Rotterdam, View from the Euromast including Het Park, Erasmus Bridge and the Nieuwe Maas River with De Zalmhaven Rotterdam's tallest tower on the left.

England, London, Canary Wharf, View over the Thames toward Britains tallest building designed by Cesar Pelli.

England, London, The Shard seen from the Scoop. which is a sunken entertainment amphitheatre next to City Hall.

Guyana, Demerara-Mahaica Region, Georgetown, St. George's Anglican Cathedral at 143 feet tall, is one of the tallest timber-built buildings in the world. It was dedicated in 1894 and is a National Mo...

Guyana, Demerara-Mahaica Region, Georgetown, St. George's Anglican Cathedral at 143 feet tall, is one of the tallest timber-built buildings in the world. It was dedicated in 1894 and is a National Mo...

Guatemala, Temple V, a ruin in the archeological site of the ancient Mayan culture in Tikal National Park, Sacrificial altar in the foreground, UNESCO World Heritage site, Temple V was built around 70...

Guatemala, Temple V, a ruin in the archeological site of the ancient Mayan culture in Tikal National Park, UNESCO World Heritage site, Temple V was built around 700 AD in the Late Classic Period and i...

Ireland, County Offaly, Birr Castle current home of the 7th Earl of Rosse, The Hornbeam Cloister Hedges in the castle gardens.

Ireland, County Offaly, Birr Castle current home of the 7th Earl of Rosse, The Hornbeam Cloister Hedges in the castle gardens.