Placing hideaways, learning facilities and vacation rentals in the treetops, Blue Forest has built a reputation for whimsical structures that celebrate nature.

Power to the people! For a century Toronto Hydro has been designing stealthy electrical substation "homes" that blend in with their surrounding neighborhoods.

These 14 highly unusual eateries take to the rivers, lakes and seas of the world, including Hong Kong's huge Jumbo Kingdom and Germany's BBQ Donut.

How do you get residents to keep their city clean - and keep smiles on their faces at the same time? These fun public games are a truly excellent solution.

Robotics holds almost limitless possibilities for our future. These 10 recent advances in robot technology show us just how far we have already come.

These 15 decorative and functional objects, from handkerchiefs to power strips, are inspired by skyscrapers and city streets.

Norway-based photographer Christopher Jonassen transforms dirty, scuffed frying pans into surprisingly convincing planets in a series called 'Devour'.

This billboard house concept by design team Apostrophy's turns sky-high urban advertising space into livable multi-story abodes with amazing views.

These photos give us a glimpse of a nearly century-old abandoned theater above a grocery store in New York, in a building which is due to be demolished.

Pedestrians in a French town were surprised to find that one day, a playful new addition to their brick walkway suddenly appeared...seemingly out of nowhere.