Adenauervilla, Architectural ruin in Duppach, Germany

Adenauervilla is an unfinished structure in the Kammerwald forest between Duppach and Steffeln, planned with 600 square metres of living space on a 2,000-square-metre plot. Its shell rises from a slope, with a flat concrete roof overgrown with moss and grass, red brick front walls, a deeply recessed dark entryway on the right and a rectangular window opening to its left. The base is partly buried in earth and moss.

Construction began in 1955 as a private residence for Chancellor Konrad Adenauer, but work stopped in 1956 due to corruption allegations. The incomplete structure was then left abandoned for decades.

Locals call the ruin "Camp Konrad", an ironic nod to Camp David, the American presidential retreat in Maryland. The name stuck after the press reported in 1955-56 that the client was the chancellor's son-in-law, architect Heribert Multhaupt, and the applicant AEG chairman Friedrich Spennrath.

The ruin stands in the Kammerwald between Duppach and Steffeln, hidden by trees on all sides and fenced off for safety reasons. It is reached on foot over forest paths; the ground is uneven and the structure itself must not be entered.

The building was nicknamed Camp Konrad, a reference to the American presidential retreat Camp David. The original designs included a nuclear shelter in the basement and a helicopter landing pad on the flat roof.