The rocks embedded in the exterior of Chicago’s Tribune Tower famously were collected by newspaper correspondents on assignment in far flung locales. The nearly 150 stones are pieces of famous structures throughout the world, including Egyptian pyramids, the Great Wall of China and St. Peter’s Cathedral in Rome. There’s even a Chicago brick taken from the home of Tribune founder Robert .
There's been no dire update of late on the Leaning Tower of Pisa's vertical challenges , so we're guessing it's still standing strong, but one of Italy's.
San Francisco has been struggling for years with its Millennium Tower , an architectural fiasco that has seen the building slowly leaning and sinking into the ground below it..