Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Summarize the paragraph in fewer than 25 words.

### Input:
The Great Wall of China is one of the most beautiful and impressive pieces of architecture ever built and is one of the greatest achievements of mankind - both in terms of human effort and technical prowess.

### Response:
The Great Wall of China is a magnificent feat of architecture and human engineering.