If you are going by foot from Roskilde railway station's direction to The Viking Ship Museum don't get confused despite you don't have a map. It is signed and the walk leads through path passing local park. The signs are not very close to each others, just keep on walking downhills until another sign is placed. When you are coming up from the museum good choice is to walk through the park.
We met Roskilde more silent and smaller than Copenhagen. Someday it would be nice to stay there longer.
Roskilde Cathedral is on the world heritage list. It locates on the way down to The Viking Ship Museum to where the road leads between the cathedral and these yellow houses.