What famous building looks like a sailing boat?

You could be thinking of the Sydney Opera House, with its famous 'sails'. It certainly is a spectacular building, perched on the edge of Sydney Harbour as though it's about to set sail.

It's also been described as a giant tissue box.

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The Burj Al Arab Hotel. this is the ultimate sailboat building.

http://www.focusmag.gr/id/files/68743/Burj%20Al%20Arab.jpg