From artistic installations to oddly slanted constructions, These out-of-the-ordinary architectural treasures embrace a modern aesthetic concept that is brought to life via their conceptualization, deviating from standard design ideas. Non-conventional architecture can be defined as "artistic or technical solutions which do not follow traditional rules and concepts." Non-conventional architects often break with traditional architectural styles, but they also differ in how far they go in departing from them. Some non-conventional architects completely destroy existing buildings by removing all the contents inside them (e.g. Daniel Libeskind) while others replace parts of existing structures with new ones (e.g. Jean Nouvel). Still other non-conventional architects create entirely new types of buildings (e.g. Frank Gehry). Regardless of what approach they take, all non-conventional architects share the same goal of coming up with designs that appeal to people's senses rather than their logic. Non-conventional architecture has become increasingly popular in recent years. This phenomenon is due to many factors, such as a growing interest in sustainability and eco-friendly building techniques, as well as a desire for more unique houses on residential plots.