Today we visited the city gate in Nanjing.

This was built about 600 years ago. The wall is surrounded by a large man made canal.

The bricks were signed and dated by their makers.  

Michaela and our guide Nancy.

A view from inside.

It's been a great day!

While we were there air raid sirens blew for several minutes. 

 Nancy explained that December 13th is the anniversary of the Nanjing Massacre of WWII. 

What a day!  Back to the room for a little rest.