The exterior of a building is its first impression, and the materials used for cladding have a major impact. Whether it's the natural appearance of wood or the sleek, sophisticated feel of glass, building material selection has an immediate impact on curb appeal.
New York City Mayor Bill de Blasio rattled some cages in the commercial real estate and building design industries last year with what many popular news channels summarized as a ban on all glass and steel skyscrapers in the City.
New technologies have allowed glass exteriors to reach new heights in energy efficiency.
Here are four incredible designs from around the word featuring glass exteriors in commercial buildings.