Designs projected on the Oberbaum Bridge during the yearly Festival of Lights in Berlin, Germany

© John MacDougall/AFP via Getty Image

An old bridge in a new light. Berlin Festival of Lights

The double-decker Oberbaum Bridge is one of Berlin's most beloved landmarks. This centuries-old structure once connected two boroughs separated by the Berlin Wall. The first bridge in this spot was built in the 1700s, although the current road-and-rail Oberbaum was constructed at the end of the 19th century.

It remains a symbol of unified Berlin, and a prominently featured landmark in the city's annual, week-long Festival of Lights, which begins today. The international festival, now in its 18th year, transforms Berlin's buildings and landma…..