Pushing the boundaries of scientific innovation and engineering often results in mind-boggling building achievements. Unfortunately, progress can also produce leaning towers of terror. This series showcases the latter -- engineering disasters, from the hilarious to the mind-boggling, from the deadly to the bank-busting. Episodes profile, investigate and analyze outrageous structural gaffes, then tell of genius resolutions to solve the issues. Blunders include an airport that is sinking into the sea, an upside-down bridge, and a waterfront building that creates a dangerous wind tunnel.