View of the London skyline on the day that Europe's tallest skyscraper, The Shard (R), opens. The Shard was being inaugurated in London with a spectacular laser show Thursday, as critics debate ... more 

View of the London skyline on the day that Europe's tallest skyscraper, The Shard (R), opens. The Shard was being inaugurated in London with a spectacular laser show Thursday, as critics debate whether it is an architectural triumph or a blot on the skyline less