What are your top 5 walls of all time (in order if possible)?

What are your top 5 walls of all time (in order if possible)?
What are your top 5 walls of all time (in order if possible)?

1. The Great Wall of China. 2. Hadrian’s Wall. 3. John Lennon Wall in Prague bit.ly/bc-lennon-wall. 4. Ishtar Gate, formerly of Babylon bit.ly/bc-ishtar 5. My friend who stands in the entrance at the McMullen Art Museum on campus. bit.ly/bc-mcmullen