Love them or hate them, there's no denying that these 80s design classics are back in a big way, but not all types of glass block are the same ...
Architect and structural engineer Masoud Akbarzadeh has challenged conventional wisdom by constructing a bridge from a material deemed unsuitable: glass.
With more than 500 bridges crisscrossing the city of Philadelphia, they are an integral part of daily life. In a city defined by its rivers, bridges make possible the connections between people.