September 7, 2025 44 min
Overview
Jan Waßenberg and Roland Wissel live on the 23rd floor of the Rheinstern high-rise in Cologne, they have so far lacked ideas for their terrace. They want a roof garden that fits their style of living – and exudes the atmosphere of Southern California. This is the special challenge faced by gardening and landscaping expert Sebastian Burggraf and horticultural engineer René Pütz.
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