Frankfurt is way much aesthetic, fresher, cleaner, organized and modern than the cities of London, Amsterdam, Paris, Rome and Monte Carlo. The stunning new skyscrapers just amazed me. It is even much better than those in Singapore and Dubai in terms of neatness in their architectural designs.
Frankfurt is not tidy at all, most of the buildings are not skyscrapers, they are just high-rise buildings which are traditional rectangular boxes standing upright. When it comes to build engineering novelty, they are lagging behind.