Lovely city with small canals full with bicycles. Large bicycle roads, nice streets to walk around.
It is the (law) students city of the Netherlands.
Coffeeshops and cannabis cafe's mostly open late in the afternoon after school hours at 16.00 hours in the city center !
Quality weed in almost every coffee shop less expensive as Amsterdam wich is only at 30 minutes drive from Leiden.
All foreigners are aloud to buy cannabis in Leiden, there are no restrictions for tourists, you don' t need any papers, just your ID-Card.
Cannabis Coffee Shops by City:
Coffee shops near the borders with Belguim and Germany do not aloud tourists. You have to be a dutch citizen or you have to work in the Netherlands to get in and buy your cannabis.
So if you temporarely work or study, get a proof at the city counsel and ask for a GBA-Uitreksel.