Page-top banners set the mood: lots of color and variety. Here is the story behind each of them.

ESRI CityEngine, a visualization tool of choice in the GIS practice. Addictive and fun to learn.

ESRI CityEngine, a visualization tool of choice in the GIS practice. Addictive and fun to learn.

CHINA: The Jin Mao building from the Shanghai World Financial Center observation deck

CHINA: The wonderfully intricate facade of Shanghai's Jin Mao Building.

CHINA: Shanghai World Financial Center from the Jin Mao observation deck

CHINA: Two supertall giants, Shanghai World Financial Center and the Jin Mao Building

CHINA: Shanghai World Financial Center from the Jin Mao observation deck

CHINA: The Centre and Central Hong Kong from the roof of Two International Finance Center

CHINA: The Crown of Two International Finance Centre (2IFC) in Hong Kong.

CHINA: The Bank of China Building, Hong Kong. The building appears on HK currency.

CHINA: Inside the Shanghai World Financial Center observation deck

CHINA: Hong Kong's densely populated urban forest

CHINA: Central Hong Kong from the roof of Two International Finance Center

LONDON: 110 Bishopgate (center) and 30 St. Mary Axe (The Gherkin), part of an eclectic variety of buildings in the financial district.

CHICAGO: Behind the landmark "Tip Top Tap" sign atop the Allerton Hotel, North Michigan Avenue, which first opened in the 1920s.

CHICAGO: The John Hancock Center, my favorite building.

CHICAGO: The John Hancock Center's crown of lights.

CHICAGO: Top of the John Hancock Center from the roof of Aon Center, where we were on a video shoot in 1999. An otherworldly experience.

CHICAGO: The John Hancock Center, my favorite building.

MISSOURI: My restored stained glass window from my grandparents' home in suburban Chicago.

MISSOURI: My restored stained glass window from my grandparents' home in suburban Chicago.

WALES: A window in St Mary's Church, Caerhun. Portions of the church date to the 14th century.

WISCONSIN: Fall color in the North Woods on US 51 near Woodruff

MISSOURI: Critters in the Woods