Solar Building Materials

It would be pretty amazing if we could build structures out of materials which had solar power properties built into them. Until then, perhaps we can drape our buildings in solar textiles.

These new materials, known as solar textiles, work like the now-familiar photovoltaic cells in solar panels. Made of semiconductor materials, they absorb sunlight and convert it into electricity.
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"Surfaces that define space can also be producers of energy," says Kennedy, a visiting lecturer in architecture. "The boundaries between traditional walls and utilities are shifting." - ScienceDaily

I'm sure Christo will take the lead.

Then there's architecture made out of water.