We walked towards the centre, the cathedral was the most intricate and gothic cathedral we have seen on our trip (and we have seen a few!). We generally preferred our time on the water front as the Rhein was beautiful in the sun, but it was interesting to see the city. We bought a padlock, signed our names and headed to love lock bridge. People have been adding padlocks to the bridge for years and years, so we picked our favourite spot and put ourselves on there too. Afterwards we threw the keys over the bridge in to the Rhein.