Amsterdam

Amsterdam has one of the most extensive historic city centres in Europe, with about 7,000 registered historic buildings. The street pattern has been largely unchanged since the 19th century — there was no major bombing during World War II. The centre consists of 90 islands linked by 400 bridges, some of which are attractively floodlit at night. Amsterdam has an amazing collection of museums, ranging from masterpieces of art to porn, vodka and cannabis. The most popular ones can get very crowded in the summer peak season, so it's worth exploring advance tickets or getting there off-peak (e.g. very early in the morning).