Residents challenge Arche project

Residents of Konstancin-Jeziorna are protesting a large Arche development planned on the site of the former Mirków paper mill. A petition launched on October 26 has gathered 725 signatures, challenging the project’s second stage. The first stage, approved by the city council in March 2025, includes renovating historic buildings and constructing 18 residential blocks with nearly 500 apartments…