High-tech architecture, also known as Late Modernism or Structural Expressionism, is an architectural style that emerged in the 1970s, incorporating elements of high-tech industry and technology into building design. High-tech architecture appeared as a revamped modernism, an extension of those previous ideas helped by even more technological advances. This category serves as a bridge between modernism and post-modernism; however, there remain gray areas as to where one category ends and the other begins. In the 1980s, high-tech architecture became more difficult to distinguish from post-modern architecture. Some of its themes and ideas were later absorbed into the style of Neo-Futurism art and architectural movement.