Well of course, the Dutch are clever.

Handing out Methadone and in the harder cases even Heroin, with clean needles in protected spaces, is what finally properly solved the extensive drug issues in the 90s here in Zürich too. The repression approach they tried first just moved the scene from Platzspitz (known in English as "Needle Park" I believe) to Letten. Harm reduction approaches were the true solution.

Same thing in Portugal since 2001 by the way.