Dear Stan,I am currently in Bonn, which makes it the 3rd ex-capital city I have visited in just over a year. (Turin used to be the Italian capital and East Berlin was the capital of East Germany). I have so far seen only the Beethoven House. He is plainly the city's most famous son, as you can tell from the numerous statues and signs pointing to
the Beethoven House. It is well worth the €5.00 admission fee, as it contains the largest collection of Beethoven memorabilia in the world - his pianos, desks, viola, portraits, letters, manuscripts and, most poignantly, the ear trumpets and conversation books which he was forced to use as his deafness progressed. 
It also contains his death mask and a lifemask made 15 years earlier. I must confess that I had never even heard of a "lifemask" until I saw his, though it is a obvious procedure to use in the pre-photography age.I had a fascinating few hours in the German-Roman Museum in Cologne. From the outside it is the sort of hideous square concrete box which gives neo-Brutalism a bad name - all the worse as it is right beside the peerless Cathedral. Once inside, it is endlessly enthralling. The interior design is far more appealing than the exterior, with one stairwell designed around a large Roman mosaic discovered in 1941 when building an air raid shelter. It boasts "the largest collection of Roman glass in the world" and I would not argue with this claim to fame. The beauty and intricacy of the craftsmanship in glass and ceramics surviving 2,000 years is a marvel in itself. It brings everyday Roman life back to life in a way better than any other museum I have seen. It includes children's toys, rings, hairpins and cosmetic pots used by the ladies, cooking pots, recreated domestic interiors, part of the Roman walls of Cologne and a rebuilt Roman carriage.
There was a wedding in progress when I visited the Town Hall, with the radiant bride and groom oblivious to the traumatic history of the building (totally rebuilt since WW2 leveling) and the nearby glass pyramid which covers the deep shaft of the Jewish ritual cleansing bath discovered at that site. The local Jews, as in every part of Europe, suffered pogroms well before the Nazis arrived. Round the corner from the Town Hall is the enormous tower of Great St Martin, a church which would be a cathedral in any other city, also totally rebuilt since 1945.
