Metastadt (Metacity) Wulfen

Metastadt Wulfen was a modular architectural complex developped in the 60s by Richard J. Dietrich and built in the 1970s. It had 102 flats that could inhabit 400 people, steel elements formed the basic structure. Sadly, it was demolished in 1987 due to constructional defects. After all, it is still an example for modular building in Germany.

From above (source)

Amphibious Houses in the Netherlands

The inevitable rise of the sea levels puts water as human living space into the focus of attention. Dutch architects have created so-called Amphibious Houses that adapt to changing sea levels in the Netherlands. They are attached to the ground, but lift autonomously when sea levels are rising as they are built on floating foundations. This is a realistic possibility of facing changing conditions, instead of ignoring the climatical changes in our times.
Building on water in this case also means a return to a nomadic lifestyle: "You can move them along the river, and go to a city which is close to the river, and park your home there in a special harbor which is constructed for this type of boat," Zevenbergen, one of the architects, says. "That we call a nomadic way of living, that you can change the area where you live depending on the season or whatever."

Amphibious house near Maasbommel, NL (source)

Green Roofs - a wise building technique

Green roofs are old, very old. They are being used thousands of years. In Scandinavia, according to what I`ve read until now, they exist especially in Norway (Sami people) and the Faroe Islands. The Vikings used to build houses with lawned roofs which causes a good interior climate. Also the legendary Hanging Gardens of Babylon tell about gardens upon houses.
In general, green roofs have many advantages. For example, they store water, so that water gets in contact with the roof much later, which can prevent damage on pipelines. The most obvious advantage is the prevention of extreme temperatures in the interior.

Sami house (source)

Earth lodge (source)

Faroe Islands (source)

Green Roof building by Zaha Hadid (source)

16th century coloured engraving of the Hanging Gardens of Babylon (source)