Generate a one-sentence description of an urban area.
An urban area is a densely populated region characterized by high-rise buildings, bustling streets, diverse cultures, and an abundance of economic, social, and entertainment opportunities.
Complete the following task based on the instruction and optional input provided.### Instruction:
Generate a one-sentence description of an urban area.

### Output:
An urban area is a densely populated region characterized by high-rise buildings, bustling streets, diverse cultures, and an abundance of economic, social, and entertainment opportunities.