Minato Mirai 21 (“Harbor Future” in English) is a nice place to spend weekend for those who don’t want to go far from Tokyo but still want to experience very special and totally different atmosphere of the city.
Yokohama is the exception among Japanese cities thanks to strong historical influence of tight relations (overseas trade, etc.) with other countries over the time. As a consequence it least reminds “classic” Japanese town having European layout, architecture, broad streets, parks, etc. Foreigners come here to feel themselves at home driven by unavoidable nostalgia in fall.