Houston, Texas

Postmark unreadable, dated 28 November 2008.

Houston is the fourth largest city in the USA and the largest in Texas.  Its skyline is considered to be the fourth most impressive in the United States. It is the third-tallest skyline in the United States and one of the top 10 in the world. Houston has a system of tunnels and walkways linking buildings - shops, restaurants, and convenience stores. This lets people avoid the summer heat and heavy rain showers while walking from one building to another.