PowerPoint Show by Andrew

A quarter of a century after the fall of the Berlin Wall, the border between West and East has been lit up by 8,000 glowing balloons.

The bright orbs are part of the Lichtgrenze - or lightborder - art project, which has seen the balloons mark the dividing line that separated West and East Berlin for nearly 30 years.

An eight-mile stretch of the former border will be lit up until dusk on Sunday, when the orbs will be untethered and released into the sky.

The balloons pass landmarks such as Checkpoint Charlie, Brandenburg Gate and the Reichstag as they zig-zag their way through Berlin.Beethoven's Ode to Joy will ring out as the balls of light are released - a symbol of peace in Europe 25 years on from the Wall's demolition.

The balloons are assembled before being distributed.

People look at balloons placed along the route of the Berlin Wall.

A man walks past a row of balloons along the Spree river near the Reichstag building.

People walk under stands with balloons placed along the former Berlin Wall at East Side Gallery.

Stands with balloons are placed along the route of the former Berlin Wall in front of the Reichstag building.

People walk under balloons installed along East Side Gallery, a remaining section of the Berlin Wall.

A tourist boat passes balloons placed along the former Berlin Wall by the Spree river.

Balloons are seen in front of the Brandenburg Gate.

Eight thousand illuminated white balloons will trace the route of the wall that divided the city.

The glowing installation winds its way past Berlin's major landmarks, including the Brandenburg Gate.

A quarter of a century after the fall of the Berlin Wall, the border between West and East has been lit up by 8,000 glowing balloons.

Beethoven's Ode to Joy, from his Ninth Symphony, will ring out as the balls of light are released into the night sky on Sunday.

The Lichtgrenze - or lightborder - art installation was created by brothers Marc and Christopher Bauder.

Dozens of the balloons are lined up on the Schwedter Steg bridge in central Berlin to commemorate the reunification of the city.

Constant reminder: Sections of the Berlin Wall still stand as a reminder of the bricks and mortar which divided the continent.

Berlin Mayor Klaus Wowereit inaugarated the light installation in a ceremony near the Reichstag yesterday evening.

A quarter of a century: Commemorations tomorrow will mark 25th anniversary of the fall of the Berlin Wall.