Last day in Germany

Monday 29th June  After checking out of our hotel, we took our bags to Jeremy's (left) then went to the North Duisburg Industrial Park.  This factory was closed 20 years ago, but used to make iron using coke from the Essen plant. 
Interesting sights: small fish in a ground-level storage bunker - how did they get there? trees and shrubs taking over the buildings and old railway tracks; a large wind sail near two cooling ponds (right); gas pipes stretching for kilometres over the countryside!  We climbed 253 stairs to the top of the furnace structure.  Our souvenir - a €5 flattened and embossed with the plant name by turning a handle!
After a brief rest at Jeremy’s, we went out to let Judith work uninterrupted.  It was SO hot, over 30°, that I got a really bad headache.  I wanted to get my hair cut before landing in Africa, but it turned out that but Monday is hairdressers' day off in Duisburg.
We took some books to the Botanic Gardens to read in the shade, but had to move off the grass when Jeremy got bitten by ants to some semi-reclining seats.
After repacking our bags and wrapping gifts, we caught the U-bahn to Düsseldorf. It was fun riding high above the pavements and roads in the free twin-carriage Sky Train, suspended below a curved concrete span, from the station to our terminal!After a search to find the right check-in desk, we enjoyed a good coffee and doughnuts with chocolate & hazelnuts inside before wandering around an interesting photographic display about immigrants living in various parts of the world.  It took a long time to pass through security, but we were happy to use some €2 vouchers to buy sweets for the Maasai children.