Here is the list from DiSerio ranking through observations and statistics:
1. Hong Kong, China – marvelous skyline on the Hong Kong island, clustered with buildings especially skyscrapers (Two International Finance Centre, Central Plaza, Bank of China Tower, The Center, Cheung Kong Center,etc), mountainous backdrop with sea in front, perfect lighting at night, dense with buildings.

2. Chicago, USA – best skyline in America, dense with buildings usually of traditional style of architecture, a lot of modern buildings rising up, skyscrapers (Sears Tower, John Hancock Center, Aon Center,etc), strategic location on the shore, shows the beginning of modern skyline.

3. New York, USA – supposingly the earliest skyline city in the world, fully dense with building with Central Park in the middle, skyscrapers (Empire State Building, Chrysler Building, Rockefeller Center, Bank of America Plaza, New York Times Building, etc), marks the beginning of skyscrapers and even skyline.famous landmark: Statue of Liberty.

4. Shanghai, China – a modern looking and futuristic city, boom in economic and prosperity, large development and construction of skyscrapers, famous skyscrapers (Shanghai World Financial Center, Jin Mao Tower, Shimao International Plaza, etc), famous landmark: Oriental Pearl Tower, strategic location in the Pudong district along the river.

5. Singapore – a small island but with rapid development, quite dense with buildings, clustered along the river too, can be known as the model garden city, buildings not so tall due to air traffic restriction, famous skyscrapers (UOB Plaza, OUB Plaza, Republic Plaza – three tallest buildings with the height of 280m).

6. Tokyo, Japan – the largest city in the world, among the biggest power in Asia, leading city in technology, fully dense with buildings, famous skyscrapers (Tokyo Metropolitan Government Building, etc), famous landmark (Tokyo Tower), lighting of buildings at night with neon is fantastic.

7. Toronto, Canada – located at strategic location along the shore, skyscrapers (First Canadian Place, Scotia Plaza, etc), famous landmark (CN Tower), quite dense with buildings, combination of traditional and modern buildings.

8. Kuala Lumpur, Malaysia – not too dense city, organization of buildings is awesome, famous skyscrapers (Petronas Twin Towers, Telekom Tower, Maybank Tower, Empire Tower, etc), famous landmark (Kuala Lumpur Tower), quite rapid development, steady growth.

9. Shenzhen, China – allignment of buildings along a straight road is perfect, lighting at night is beautiful, quite dense with buildings, famous skyscrapers (Shun Hing Square, SEG Plaza, Golden Business Center, Shenzhen Development Bank Tower, etc), rapid development.

10. Seattle, USA – located on a strategic location along the shore too, skyscrapers (Columbia Center, Washington Mutual Tower, Two Union Square, etc), famous landmark (Space Needle), a modern looking city too.
