Visit Malaysia: KLCC

KLCC or Kuala Lumpur City Center is a must see for everyone who come through Malaysia. it's a 100-acre development with the 452 meters, 88 storey high Pertonas Twin Towers as its landmark. KLCC consist of the following components:

Suria KLCC shopping center,
KLCC Park,
Kuala Lumpur Convention Center (KLCC),
Petrosains science center inside Suria KLCC,
Petronas Twin Towers,
Dewan Filharmonik PETRONAS the home of the Malaysian Philharmonics Orchestra,
Aquaria inside the convention center,
Trader's Hotel, and
Mandarin Oriental Hotel

You can easily spend the whole day here. If you are pressed on time and only have a day or two in Malaysia then this should be your first stop. Start bright and early with the Pertonas Twin Towers' sky bridge tour. You'll get to view much of KL from a height of 170m. Entrance is free but it's on a "first come first serve" basis and the queue is long. You'll have to get there as early as 8am just to get your tickets. If you are late you may end up with a 4pm ticket.
The 5 level shopping arcade has everything from electrical and electronics to fashion galore. The Asian Flavours Food Court on level 4 offers you a variety of Asian as well as Malaysian cuisines at very affordable prices. You'd could get away with a full meal and a soft drink at RM15 here. It's not as good or as cheap as the real stuff you'd find at our favourite local food stalls and restaurants but it's close enough. There is a science center that would be exciting and educational for most kids and the tickets are only RM12 for adults. After all that walking around, you can plant yourself at a selection of cafés that overlook the KLCC park.
The Aquaria at the Convention Center pull in quite a crowd. You get to see sharks, rays and many other sea creatures here. Ticket prices are RM38 (adults) and RM26 (children below 12) for tourists.
Both Trader's and the Mandarin Oriental hotels offer a great view of the Twin Towers and the city. Caution though, it not a place for the budget conscience.