Tall buildings
Being in Hong Kong is sufficient reason to revisit the Skyscraper Page, especially its excellent diagrams. Here are the 25 tallest buildings in Hong Kong; the tallest is 2 IFC, which is currently the fifth tallest building in the world (top 10).
My favorite Hong Kong skyscraper is the HSBC Building. Designed by Norman Foster, it's the building that every architecture geek friend of yours tells you to check out while you're in Hong Kong. Initially, I thought yeah, yeah, how great can it be, it looks kinda like every other modern steel and glass building, and then we went inside and rode the escalator up through the glass ceiling and into a huge atrium. Pretty cool. And then I saw the building from the side and also at night when the side stairwells are lit up with alternating red and white lighted patterns, and I really started to appreciate why it's such a revered building; the Chinese even believe it's got some of the best Feng Shui in HK.