Answer:
Aachen Cathedral
Speyer Cathedral
Würzburg Residence with the Court Gardens and Residence Square
Pilgrimage Church of Wies
Castles of Augustusburg and Falkenlust at Brühl
St Mary's Cathedral and St Michael's Church at Hildesheim
Roman Monuments, Cathedral of St Peter and Church of Our Lady in Trier
Frontiers of the Roman Empire
Hanseatic City of Lübeck
Palaces and Parks of Potsdam and Berlin
Abbey and Altenmünster of Lorsch
Mines of Rammelsberg, Historic Town of Goslar and Upper Harz Water Management System
Maulbronn Monastery Complex
Town of Bamberg
Collegiate Church, Castle, and Old Town of Quedlinburg
Völklingen Ironworks
Messel Pit Fossil Site
Bauhaus and its Sites in Weimar and Dessau
Cologne Cathedral
Luther Memorials in Eisleben and Wittenberg
Classical Weimar
Museumsinsel (Museum Island), Berlin
Wartburg Castle
Garden Kingdom of Dessau-Wörlitz
Monastic Island of Reichenau
Zollverein Coal Mine Industrial Complex in Essen
Historic Centres of Stralsund and Wismar
Upper Middle Rhine Valley
Delisted 2009
Muskauer Park / Park Mużakowski
Town Hall and Roland on the Marketplace of Bremen
Old town of Regensburg with Stadtamhof
Berlin Modernism Housing Estates
The Wadden Sea