Aesthetics is in the eye of the beholder, and it depends upon the prevailing tastes of the time. A building's functionality, or fitness, is a matter of how well it accommodates the purposes for which it was built. Its structural integrity means soundness - will the building last over time? Historically speaking aesthetics has usually trumped fitness as the overriding factor in architectural design. Classical architecture was preoccupied with articulating features on walls and facades. Modern architecture is equally concerned with aesthetic formalities, such as form following function.
But the difference between classical and contemporary architecture is that few of the traditional building and ornamentation methods are still being used, since modern architecture has integrated modern technology by embracing new methods of building, new materials, and an accent on functionality rather than embellishment. For example, one common feature in contemporary architecture is the mixture of stone, wood, and brick wall materials on the same surface.
In fact, cottages - by which is meant small, asymmetrical, (usually) rural dwellings of one or two stories and stone, brick, or stucco exteriors, come in a large variety of architectural styles. European-type cottages can incorporate design traits from Tudor, Georgian, French, and Italian architectural styles, with open rooms and high ceilings, fireplaces, and even luxurious elements such as gourmet kitchens, formal dining rooms, private master bedrooms, and French doors. What all cottage styles have in common is their livability - their human scale and design for relaxing, unstressful enjoyment of life.
Exposed wooden or steel beams, flat roofs with large overhangs, and split levels to take advantage of the terrain, are also common accents associated with the contemporary style.