In the late nineteenth century, architects began to use **steel** as a construction material. Steel offered several advantages over other materials like cast iron, stone, and wood.
1. **Strength:** Steel is a very strong material, allowing architects to create taller and more innovative structures.
2. **Durability:** Steel is highly durable and can withstand various environmental conditions, making it ideal for building long-lasting structures.
3. **Flexibility:** Steel is a flexible material that can be molded into different shapes and designs, giving architects more creative freedom in their designs.
By utilizing steel in construction, architects were able to push the boundaries of design and create iconic structures that have stood the test of time.
