Bilateral symmetry in architecture refers to a design where one side of a building is a mirror image of the other side. This type of symmetry is commonly used to create a sense of balance and harmony in a structure. Here’s a detailed example:
### The Parthenon in Athens, Greece
**1. Design Overview:**
- The Parthenon, a classic example of Greek architecture, exhibits bilateral symmetry. It's a temple dedicated to the goddess Athena, built in the 5th century BCE.
- The structure is a rectangular building with a series of columns that surround it, creating a colonnade or peristyle.
**2. Symmetrical Elements:**
- **Front and Rear Facades:** The front (east) and rear (west) facades of the Parthenon are mirror images of each other. Each facade has eight columns (the octastyle arrangement) and a central entrance.
- **Side Facades:** The side facades are also symmetrical, with 17 columns each, creating a balanced look when viewed from the sides.
- **Colonnades:** The rows of columns are evenly spaced and align perfectly on both sides, reinforcing the sense of symmetry.
**3. Architectural Features:**
- **Doric Order:** The Parthenon uses the Doric order, one of the classical architectural styles, characterized by simple, sturdy columns and a frieze without decoration. This uniformity in column design further enhances the symmetrical effect.
- **Entablature and Pediments:** The entablature (horizontal structure supported by the columns) and the pediments (triangular sections above the entablature) are also symmetrical. Each pediment features sculptures that were originally designed to complement the symmetry of the overall structure.
**4. Purpose and Effect:**
- The use of bilateral symmetry in the Parthenon was intended to convey order, stability, and beauty. By mirroring the elements on each side of the structure, the architects created a sense of perfect balance and harmony.
- This symmetry not only served an aesthetic purpose but also reflected the ancient Greeks' values of proportion and proportionate beauty, contributing to the temple’s iconic status in architectural history.
In summary, the Parthenon is a prime example of bilateral symmetry in architecture, showcasing how symmetrical design can achieve both visual balance and profound cultural significance.