The doors of Nanjing

The doors of Nanjing - a city worthy of a king - 
oh the joy that they bring!
For hours on end one could be debating 
about what lies awaiting  
behind the doors in Nanjing. 
To say the least, the place is fascinating! 
Yes, really, I'm not exaggerating. 
And if it is a trip that you are contemplating, 
I'd be advocating a visit to Nanjing! 
The doors of Nanjing - a place to laugh and to sing - 
oh the joy that  they bring! 

I recently visited Nanjing, where my good friend, Frankie, showed me around. I did not have time for a 30 day challenge, but I was inspired by all the interesting sites, so I decided to embark on a 30 Door challenge. Here are 30 fascinating doors in Nanjing - all leading to interesting places. 

I saw big doors and small doors; open doors and closed doors; modern doors and ancient doors; revolving doors and sliding doors, wooden doors, steel doors and glass doors.