By Meredith Galante
Real estate may be expensive, but sometimes the buildings constructed on top of that land are far pricier.
Construction started last year on Yongsan Landmark Tower in downtown Seoul, South Korea, which is expected to cost a record-breaking $3.43 billion to build.
But there are lots of other pricey buildings out there.
We've rounded up the most expensive, using data from MSN.ca.
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