Today we went on a walk around Hamburg. It was great! We had lots of fun. Jana is an architect, so she showed us some of the buildings she helped design. She's really good. She also told us about some of Hamburg's interesting architectural features. In some parts of Hamburg, near the port, there are two footpaths, one is three metres above the other in case of tidal floods and storms.
In Australia we call them King tides, and in Hamburg they happen once or twice a year. In the older buildings, the people let the bottom floor doors open, letting the flood through to the other side.
Then, they close the doors after the flood has swept through. They do this to reduce the amount of damage from the pressure of the flood water on the buildings. The more modern buildings are designed like fortresses with massive flood gates that come out of the buildings, locking off the water. The top footpaths were built so that people could still get to work during the floods.