Some houses, designed as museums, have an eye-catching wooden artwork on ceilings and some possess an indoor pool to cool the air and to avoid fire.
The name of the town derives from "saffron", and Safranbolu is where the best quality saffron in the world is produced.
The cultivation and care of saffron is very demanding, however, it is worth the effort since it is capable of coloring a fluid one hundred thousand times as heavy as the saffron itself with yellow.
Being used in pharmaceutical, food and cosmetics industries, it carries the title of being the most expensive spice in the world.