Quick Read. Kathmandu is Nepal’s political, cultural and service capital, concentrated in a mountain valley where heritage, tourism, road access, air quality, water and earthquake risk all interact.

One-sentence answer: Kathmandu works by concentrating national institutions, tourism, education and commerce into a valley city whose resilience depends on transport, water, building safety and the preservation of historic urban fabric.

1. Valley geography shapes carrying capacity

Mountains constrain expansion and air movement, while road approaches concentrate logistics into limited corridors.

2. Heritage is economic and cultural infrastructure

Historic temples, squares and neighbourhoods attract tourism and preserve identity, but they also require careful seismic protection and redevelopment.

3. Earthquake risk is structural

Building quality, emergency access and open-space availability can determine whether a physical shock becomes a humanitarian system failure.

4. Feedback and failure

• tourism → income → heritage investment → more tourism;
• capital jobs → migration → land pressure → congestion and air stress;
• unsafe construction → earthquake exposure → larger recovery burden.

5. Comparison and parent routes

Compare Thimphu for a smaller Himalayan capital and Kabul for another mountain-basin city under different institutional conditions. Return to How Nepal Works and How Cities Work.

Closing idea. Kathmandu shows how urban memory and physical vulnerability can occupy the same streets.