The Altstadt, which gradually segues into the actual city with its offices and shopping streets, extends from the historical Speicherstadt and the narrow canals with the last remaining Medieval office buildings all the way to the Rathaus. In between, you can also find traces of a "green", sustainable way of living. It is only a short walk from one of Hamburg's oldest districts to the newest one: Hamburg's HafenCity is a test lab for urban models of the future. It aims to set an example for city planning that also prioritises social integration and ecological sustainability. Fundamentally, the area itself is a gigantic "recycling product" created from former harbour and industrial areas. Openness to future-oriented ideas is major here and is reflected by the shops and companies that have settled here. On this walk you will discover sustainable cafés, restaurants, various shops and exciting exhibitions. At the Osaka 9 Sustainability Pavilion you will learn about a sustainable city development, and at the interactive multimedia exhibition at Greenpeace's headquarters you will experience how consumer behaviour and protection of the environment interrelate. How about a little snack on the way? Green Lovers serves delicious vegetarian and vegan lunch menues. And if you want to taste some original dishes from Hamburg, Oberhafen-Kantine is a perfect place to go.