In the 21st century the architects and designers of urban spaces face great challenges to integrate nature in order to transform "cement forests" into "forest cities". Perhaps the best solution is to go green with vertical landscapes. More than just a decorative trend, this is a means of bringing life and greenery into metropolitan areas by using different framing systems to create compositions of plant life and adapt them to diverse settings, including offices, factories, parking lots, hotels, and installations within larger parks