The Shard is due to be inaugurated later with a light show visible across London amid anger over the "exorbitant" price of visiting its viewing platform.
The EU's highest building's external completion is to be marked with a laser show beginning at 22:15 BST.
Beams will be fired from its summit to 15 London skyscrapers and landmarks such as the Gherkin and Canary Wharf.
But there was dismay as it was revealed it will cost nearly £90 for a family of four to visit the viewing platform.
Tickets to the platform - which opens in February - will cost £24.95 for an adult and £18.95 for a child.
By comparison, an adult ticket to the top of the Eiffel Tower in Paris is currently priced at 14 euros - just over £11.
