Did you know that in its old days, the prices of houses in Amsterdam corresponded to how wide they were? This is the reason for why Amsterdam’s canals are lined with skinny houses, sometimes up to six stories tall, and only two or three windows wide. If you look closely, some buildings have sunk into the foundations below and have started to lean. These are called ‘dancing houses!’ Keep looking upward to see the distinct features of the tops of all the buildings. Many have a distinct crest of rooftop design that make for taking great photos.