The Petronas Towers in Kuala Lampur, until recently the tallest building in the world. 

In KL, this is the national Mosque. 

Up north, we visited some of the coastal villages. 
We saw this traditional house, or actually a modern re-creation of a traditional house.

Here's the Khoo Kongsi Temple in Penang.  It's a fascinating coastal town; colonial and asian architecture everywhere.

Near KL is Batu cave in which is build a hindu temple. 
Yes, the stairs are as numerous and as steep as it looks.

Inside Batu cave are stalactites and stalagmites in addition to the man-made attractions.