List of Unique I have been to

The World Highest Post office .

Situated in the Lahual & Spiti valley is the World Highest Post-office at an attitude on 4000m above sea level.

Floating Post office ,Srinagar

Floating post office is situated in Srinagar,the capital of Kashmir .

Unique fact about the post office is that ,it actually is made of wood and floats in the steady water of Dal lake .