The Elbphilharmonie is in the HafenCity quarter of Hamburg, Germany, on the Grasbrook (de) peninsula of the Elbe River. It is one of the largest and most acoustically advanced concert halls in the world. It is popularly nicknamed Elphi. The new glassy construction resembles a hoisted sail, water wave or quartz crystal; it sits on top of an old warehouse building (Kaispeicher A, built 1963) near the historical Speicherstadt and is designed by architecture firm Herzog & de Meuron. It is the tallest inhabited building of Hamburg, with a final height of 108 metres (354 ft). The Elbphilharmonie was officially inaugurated with concerts of the NDR Elbphilharmonie Orchestra and a light show on 11 January 2017.
On 2 April 2007, the foundation stone was laid in the warehouse Kaispeicher A (de), in the presence of then First Mayor of Hamburg Ole von Beust, Hochtief Construction AG CEO Henner Mahlstedt, Hochtief project coordinator Hartmut Wegener, Hamburg Minister of Culture Karin von Welck and architect Pierre de Meuron.
In 2007, the construction was scheduled to be finished by 2010 with an estimated cost of €241 million. In November 2008, after the original contract was amended, the costs for the project were estimated at €450 million. In August 2012, the cost were re-estimated to be over €500 million, which should also cover the increased cost for a strengthened roof. Construction work officially ended on 31 October 2016 at a cost of €789 million.
The first public test concert at the Elbphilharmonie was held on 25 November 2016. The official opening concert took place on 11 January 2017 with a performance by the NDR Elbphilharmonie Orchestra under direction of Thomas Hengelbrock. The first musical selection was "Pan" from Benjamin Britten's Six Metamorphoses after Ovid.
The building is designed as a cultural and residential complex. The original 1966 brick façade of the Kaispeicher A, formerly a warehouse, was retained at the base of the building. On top of this a footprint matching superstructure rests on its own foundation exhibiting a glassy exterior and a wavy roof line. About one thousand glass windows are curved. The building has 26 floors with the first eight floors within the brick façade. It reaches its highest point with 108 meters at the western side. The footprint of the building measures 120,000 m2. A curved escalator from the main entrance at the east side connects the ground floor with an observation deck, the Plaza, at the 8th floor, the top of the brick section. The Plaza is accessible by the public. It offers a view of Hamburg and the Elbe. From the Plaza the foyer of the concert hall can be reached.
The Elbphilharmonie has three concert venues. The Great Concert Hall can accommodate 2,100 visitors whereby the performers are in the center of the hall surrounded by the audience in the vineyard style arrangement. The acoustics were designed by Yasuhisa Toyota who installed about 10,000 individually microshaped drywall plates to disperse sound waves. The Great Concert Hall contains a pipe organ with 69 registers built by Klais Orgelbau. The Recital Hall is intended for the performance of recitals, chamber music and jazz concerts; it can hold an audience of 550 people. In addition, there is the Kaistudio that allows for 170 visitors and is intended to serve educational activities. The consultant for the scenography of the concert hall was Ducks Scéno.
The easternmost part of the building is rented by Westin as the Westin Hamburg Hotel that opened on 4 November 2016. The hotel offers 244 rooms between the 9th and 20th floors. The lobby in the 8th floor can be accessed from the Plaza. The upper floors west of the concert hall accommodate 45 luxury apartments. The complex also houses conference rooms, restaurants, bars, and a spa. A parking garage for 433 cars is part of the building complex as well.