The Clock Tower, a Hong Kong landmark, Tsim Sha Tsui, Kowloon, Hong Kong, China, Asia

South Bank with City Hall, Shard London Bridge and More London buildings, London, England, United Kingdom, Europe

View from City Hall rooftop over City of London skyline, London, England, United Kingdom, Europe

Manhattan skyline at sunset, New York City, United States of America, North America

Lower Manhattan skyline across the East River at sunset, New York City, New York, United States of America, North America

Manhattan skyline at dusk, New York City, United States of America, North America

Flatiron Building, Madison Square, New York City, United States of America, North America

Millennium Park and the Cloud Gate sculpture, Chicago, Illinois, United States of America, North America

Upscale shopping street, Chicago, Illinois, United States of America, North America

City Hall, Arezzo, Umbria, Italy, Europe

The Royal Exchange, City of London, UK

Skyline and Victoria Harbour at night from the Peak, Hong Kong Island, Hong Kong, China, Asia

Hong Kong Island skyline from Victoria Harbour, Hong Kong, China, Asia

Raffles Place in the Financial District, Singapore, South East Asia

The Massachusetts State House, 1798, designed by Charles Bulfinch, Boston, Massachusetts, USA

Custom House and buildings in the Financial District, Boston, Massachusetts, USA

Massachusetts State House, 1798, Boston, Massachusetts, USA

Lagoon Bridge in the Public Garden, Boston, Massachusetts, USA

Audierne, Southern Finistere, Brittany, France

Tower Bridge, River Thames, London, England

The Tower of London, London, England

The River Thames, South Bank and City Hall on left, City of London on right, London, England

Burj Al Arab Hotel, Dubai, United Arab Emirates, Middle East

Jumeirah Beach Hotel, Dubai, United Arab Emirates, Middle East

Wind towers, Madinat Jumeirah Hotel, Dubai, United Arab Emirates, Middle East

The Financial District from the Singapore River, Singapore, Southeast Asia, Asia

The United Nations Building, Manhattan, New York City, New York, United States of America, North America

The United Nations Building, Manhattan, New York City, New York, United States of America, North America

The Empire State Building and Midtown Manhattan skyline across the Hudson River, New York City, New York, United States of America, North America

Manhattan skyline across the Hudson River, New York City, New York, United States of America, North America

Charles Bridge in the early morning, UNESCO World Heritage Site, Prague, Czech Republic, Europe

City Hall, Main Square, local cyclists, Delft, Holland, Europe

Hong Kong Island skyline and Victoria Harbour at dusk, Hong Kong, China, Asia

Hong Kong skyline from Victoria Peak, Hong Kong, China, Asia

St. John's Cathedral dating from 1850, the oldest Anglican church in East Asia, Central, Hong Kong, China, Asia

A Chinese style tourist boat sails in Victoria Harbour, Hong Kong, China, Asia

Jay Pritzker Pavilion designed by Frank Gehry, Millennium Park, Chicago, Illinois, United States of America, North America

Cloud Gate sculpture in Millennium Park reflecting the skyscrapers of North Michigan Avenue, Chicago, Illinois, United States of America, North America

Stavanger Harbour, Norway, Scandinavia, Europe

Minsk, Belarus, Europe

South Street Seaport and Lower Manhattan buildings, New York City, New York, United States of America, North America

Brooklyn Bridge spanning the East River and Lower Manhattan skyline, from Empire-Fulton Ferry State Park, Brooklyn, New York City, New York, United States of America, North America

Two 1950's cars parked near the Brooklyn Bridge at Fulton Ferry Landing, Brooklyn, New York City, New York, United States of America, North America

The New York Stock Exchange, Broad Street, Wall Street, Manhattan, New York City, New York, United States of America, North America

Early morning on Charles Bridge looking towards the Old Town, UNESCO World Heritage Site, Prague, Czech Republic, Europe

Early morning on Charles Bridge looking towards Prague Castle and Hradcany, UNESCO World Heritage Site, Prague, Czech Republic, Europe

Antiques, Souk Madinat, Dubai, United Arab Emirates, Middle East

Burj Khalifa and Dubai Mall, Dubai, United Arab Emirates, Middle East

Restaurants in Cours Saleya, Nice, Alpes Maritimes, Provence, Cote d'Azur, French Riviera, France, Europe

Baie des Anges and Promenade Anglais, Nice, Alpes Maritimes, Provence, Cote d'Azur, French Riviera, France, Mediterranean, Europe

Chester Town Hall and the Celebration of Chester Sculpture, Northgate Street, Chester, Cheshire, England, United Kingdom, Europe

Restaurant and street cafe at the market square, town hall and castle, Heidelberg, Baden-Wurttemberg, Germany, Europe

Main Market Square, St. Mary Basilica and Cloth Hall, Cracow, Lesser Poland Voivodeship, Poland, Europe

Chicago River and towers of the West Loop area, Willis Tower, formerly Sears Tower in the background, a raised disused railway bridge in the foreground, Chicago, Illinois, United States of America, North America

The Wrigley Building and Chicago River, Chicago, Illinois, United States of America, North America

City skyline from the Chicago River, Chicago, Illinois, United States of America, North America

Classical architecture in the financial district, Chicago, Illinois, United States of America, North America

City Hall, George Town, UNESCO World Heritage Site, Penang, Malaysia, Southeast Asia, Asia

Chicago River Walk and towers including Trump Tower and the Wrigley Building, Chicago, Illinois, United States of America, North America

The Wrigley Building and Tribune Tower by the Chicago River, Chicago, Illinois, United States of America, North America

Chicago cityscape at dusk viewed from Lake Michigan, Chicago, Illinois, United States of America, North America

Theatre District, Chicago, Illinois, United States of America, North America

Cityscape of Millennium Park and the Cloud Gate steel sculpture by Anish Kapoor, Chicago, Illinois, United States of America, North America

Marshall Field Building Clock, Chicago, Illinois, United States of America, North America

Chicago Board of Trade Building, Downtown Chicago, Illinois, United States of America, North America

Glass towers along the Chicago River, Chicago, Illinois, United States of America, North America

Chicago skyline and Lake Michigan at dusk, Chicago, Illinois, United States of America, North America

Willis Tower, formerly the Sears Tower, completed in 1973, at the time it was the tallest building in the world, Chicago, Illinois, United States of America, North America

High view of the Hong Kong Island skyline and Victoria Harbour at night, Hong Kong, China, Asia

St. Nicholas Church from Town Hall Tower, Prague, Czech Republic, Europe

Olympic Stadium surrounded by wild flowers in the Olympic Park, Stratford City, London, England, United Kingdom, Europe

Brooklyn Borough Hall, Brooklyn, New York, United States of America, North America

Chinatown, Manhattan, New York City, United States of America, North America

Manhattan skyline, New York City, United States of America, North America

Elbe Philharmonic Hall, Hafen City, Hamburg, Germany, Europe

Town Hall of Rechtstadt District on Long Market in Gdansk, Gdansk, Pomerania, Poland, Europe

Times Square by night, New York City, United States of America, North America

Manhattan skyline and Empire State Building at dusk, New York City, United States of America, North America

Chicago River Walk, Chicago, Illinois, United States of America, North America

City Hall, Dublin, Republic of Ireland, Europe

City Hall, Ragusa Ibla, Val di Noto, UNESCO World Heritage Site, Sicily, Italy, Europe

Flagstaff House and Teaware Museum, the oldest western style building in Hong Kong, China

The Woolworth Building, Manhattan, New York City, New York, United States of America, North America

Central, Hong Kong Island, Hong Kong, China, Asia

Hong Kong Island skyline from Victoria Harbour, Hong Kong, China, Asia

Boston Common, Boston, Massachusetts, USA

Trinity Church and the John Hancock Tower, Copley Square, Boston, Massachusetts, USA

Buildings in the Financial District, Boston, Massachusetts, USA

Lagoon Bridge in the Public Garden, Boston, Massachusetts, USA

Grand Central Station Terminal Building, 42nd Street, Manhattan, New York City, New York, United States of America, North America

Emirates Towers, Sheikh Zayed Road, Dubai, United Arab Emirates, Middle East

City skyline at dusk, Singapore, Southeast Asia, Asia

The Chrysler Building, 42nd Street, Manhattan, New York City, New York, United States of America, North America

Charles Bridge, UNESCO World Heritage Site, Prague, Czech Republic, Europe

Early morning on Charles Bridge looking towards the Old Town, UNESCO World Heritage Site, Prague, Czech Republic, Europe

St. Vitus's Cathedral and Prague Castle illuminated at dusk, UNESCO World Heritage Site, Prague, Czech Republic, Europe

Wanchai District across Victoria Harbour, Hong Kong Island, Hong Kong, China, Asia

The Wrigley Building, center, North Michigan Avenue and Chicago River, Chicago, Illinois, United States of America, North America

Aerial view of Chicago at dusk, looking south, Chicago, Illinois, United States of America, North America

Jay Pritzker Pavilion designed by Frank Gehry, Millennium Park, Chicago, Illinois, United States of America, North America