The city of Kuala Lumpur was originally a district of the state of Selangor, but later after Independence, because KL city was the most developed in the country, it was chosen by the Federal Government to become the "Federal Territories", this works like District of Columbia in Washington D.C, USA where the district is actually own by the Federal Government.
The word Kuala Lumpur literally means the Delta of mud, or muddy delta. Historically, Kuala Lumpur was developed because of several tin mines around KL. The price of Tin is expensive and was exported to U.S during civil war and to the rest of Europe during WW1 and WW2. the scene of muddy environment is actually comes from the mining activities around KL. The last Tin mine in KL was in 1970's and there are no longer tin mining activities since then. Now, other economic activities such as commercial areas, offices, banks, services, shopping complex etc had become the main sector of economy in KL.
Featured are Petronas Twin Tower on Kuala Lumpur City Centre (KLCC) and surrounded by commercial buildings and offices. The price of land around this building is . . . astronomical!
Featured are ELR but known in Malaysia as LRT (Light Railway Transit). The ground railway in the picture is known as KTM Komuter. Another type of transportation is KL Monorail. These three intercity railways had reduce the traffic jams in KL, but so far the traffic jam is still there.
Featured are sunken highways into tunnels at Jalan Tun Razak (Tun Razak Road). It seems as an alternative for the fly over pass.