The Council of Tall Buildings, a Chicago-based organization of architects and designers, has just published its Innovative 50 list, their ranking of the most innovative buildings of the last 15 years.
To be included, the buildings had to challenge the "traditional typology of tall buildings in some way, through innovation in form, design, façade, environmental approach, technologies."
In other words, this isn't just a list of the tallest buildings on Earth, although many of them would qualify.
The Tower at PNC Plaza, Pittsburgh USA. 172 metres tall, construction started in 2011 and hasn't concluded yet.
1 Bligh Street, Sydney, Australia. 139 metres tall, famous for its ecological development and glass foyer.
Al Bahar Towers in Abu Dhabi, UAE. The 145 metre-tall twin towers are encased in solar panels.
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