Members of Library of Birmingham staff, council representatives and Carillion employees gathered in the dramatic rotunda which will house the five-storey book wall.
The rotunda, at the very heart of the library, features a series of cantilevered circular balconies each providing access to a different part of the shelves that comprise the book wall.
Escalators zigzag across the space, providing stunning views throughout the library and access for all to over 400,000 books, more than double the amount currently on show at Central Library.
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Slowly brightening up later in the day, with some warm sunny spells possible by evening.
Any mist and low cloud will clear during the morning, leaving bright or sunny spells.
Beginning grey and murky again with extensive low cloud and some patchy rain.