October 2007, at the New Art Centre at Roche Court, Wiltshire, U.K. Gyllenhammar created a monumental sculpture. The work was inaugurated in connection to the Richard Deacon exhibition and was on view until spring 2008. Curator Sarah Unitt describes the work, entitled Traum, created for Roche Court as:
''a tower standing at 4m high, made from cast concrete. Inside the tower, visible only through narrow windows, is a small, exquisite gilded hot-air balloon. The title, Traum, is a German word, meaning dream. The work conjures up fairy tales and follies and the tower itself, set in the sweeping landscape of Wiltshire, could be taken for a 21st century folly. Traum is to do with unsettling our perceptions and creating an atmosphere of tension.''
Most notably, Gyllenhammar has completed a monument to Raoul Wallenberg, commissioned by the city of Gothenburg, Sweden. The monument was inaugurated by Kofi Annan on May 25, 2007, and was awarded the Jewish Association's Art Prize for 2007. The monument is a photo based work in bronze and concrete.
In March 2007, Gyllenhammar was the first artist to be invited by Swarovski crystal to create a work of art with their crystals. The piece, entitled The Choir, was on exhibition at Swarovski Kristallwelten in Austria, and was comprised of a sculptural group of singing children. The crystals formed the children’s mouths, and provided an interesting contrast to the raw texture of the clay figures.
February 2007, Gyllenhammar’s installation entitled Wonder was inaugurated at the Swedish Foreign Policy Institute and the Swedish National Defense College in Stockholm. The piece consists of several bronze sculptures and a monumental photograph of an explosion.
January 2007, Nachsagen, Ich und Meinhof was on exhibition at the Norrköping Museum of Art in Sweden, in an exhibition entitled Rock 'n Roll Vol. I. The exhibit then traveled to Norway where it was shown at Sørlandet Art Museum. The work was also included in an exhibition at Malmö Art Museum featuring works from their collection entitled Som du ser mig – porträtt från samlingen (As You See Me – Portraits from the Collection).
