 In contrast to the other buildings, the Landvogt's residence does not back directly up to the ring wall, but is separated from it by a 1 to 2-metre gap.The exception is a small round tower at the southeast corner; built in 1626, it replaced a protruding bay that served as an outhouse.The pentagonal stairway tower which was attached to the façade in 1630 replaced a steep staircase within the building.