Streamline Moderne was an international style of Art Deco styling and architecture that developed in the 1930s in which streamlined designs were highly prized. It was heavily influenced by aerodynamic theory. Streamline architecture focused on curved forms, long straight lines, and even sometimes nautical elements such as anchors and steering lines. Streamlined architecture made use of materials such as glass, aluminum, steel, aluminum and fiberglass. Streamlined buildings would often use cantilevered construction.

The Streamline style moderne had a minimalist feel to it, in which too much ornamentation was avoided. While this avant-garde approach may seem to be missing the mark in terms of building forms, it still managed to create a very sleek and streamlined look. Streamlines often called for smooth finishing touches such as plastered surfaces and flat panels. This style was most common in offices, but some of the most notable examples of Streamline style moderation include the Le Corbusier Office in Paris, the Ritz Carlton in New York City, and the Ritz Carlton in Los Angeles, California.

Streamline Moderne was a major departure from the traditional styles of the time. It borrowed heavily from various art style elements such as impressionism, cubism, pop, and Viennese art but it also combined many other design features such as rounded forms, rounded edges, and geometric influences. Streamlines were a style first introduced in Great Britain. In America, it was further popularized by architects Frank Lloyd Wright and John Grace.

Streamline design was a highly valued interior design style that focused on smooth surfaces that emphasized wide gulf lines with curved or diagonal edges. Streamlined architecture focused more on the geometric shapes and smooth finishes than on the use of delicate art style elements. Streamlines were considered an art nouveau movement that included an affinity for complex geometric shapes, metals, glass, and steel. Streamlines often used large panels of glass or other forms to accent their clean lines.

Streamline Moderne has been criticized as overbearing because its use of complex decorative elements was considered to result in a highly visual experience that tended towards overcrowding. Streamlines are often associated with high-contrast colors and stark, sterile colors that are more suited to forms rather than actual objects. Critics also noted that Streamline was one of the very last art style movements to incorporate more sophisticated use of perspective in its decorative elements.

Exposition Internationale des arts, the Style Moderne style is sometimes recognized by its use of what is called a deco typeface, or a typeface which utilizes decorative elements that have a geometric or irregular appearance. A typical example of this would be a decorative element such as a rounded Deco face that contains a texture. Decorative elements which take on the appearance of rounded curves can also be used, which makes the style looks like it has an irregular shape. In terms of the style’s use of geometric shapes, the concept is similar to that of minimalism, with the decorative element acting as a guide to the eye. The concept is popular among designers who prefer a less intricate style.