Caption

Modern architecture, geometric lines, former water tower of the Radolfzell dairy plant, converted into the Hotel Aqua-Turm since 2017. The world's first zero-energy passive high-rise building, the entire façade consists of around 1000 photovoltaic modules and uses solar thermal energy wind power and hydrothermal energy to produce more energy than it consumes, Konstanz district, Baden-Württemberg, Germany

Date

Jan 23, 2026

Credit line

Photo12/imageBROKER/Markus Keller

Reference

BRK26B86_231

Model release

No

Property release

No

License type

Royalty free

Available size

130.0Mb (5.0Mb) / 18.3in x 27.5in / 5504 x 8256 (300dpi)

Keywords

deserted line window glass window building city urban tower water tower architecture milk geometry solar energy solar cell alternative energy power generation power supply environment protection environment German modern Europe architectural style produce wind power high-rise electricity ecofriendly Southern Germany energy contemporary energy source solar panel european power industry Baden-Württemberg steel former geometric Germany renewable exterior view ecological awareness sustainability more solar-powered generation of current passive environmental issue Bodenseekreis Radolfzell Konstanz Region of Lake Constance Modern architecture hotel Central Europe County facade skyscraper Dairy plant no one structure town urban environment solar energy panel green energy energy production electricity supply environmental protection manufacture highrise eco-friendly South Germany photovoltaic panel energy industry Baden-Wurttemberg geometrical German Federal Republic solar collector regenerative exterior environmental awareness generation of electricity Lake Constance district Radolfzell am Lake Constance Constance Lake Constance region resort Middle Europe district front skyscraper building No People construction municipal renewable energy energy supply environmental conservation make wind energy tower block environmentally friendly photovoltaic module Republic of Germany sun collector sustainable outdoor shot Power generation Lake Constance county Radolfzell am Bodensee frontage nobody solar power Environmental friendly solar energy system FRG Photovoltaic panel exterior photograph electricity generation uninhabited photovoltaics photovoltaic system solar paneel outdoor photo empty solar system solar installation photovoltaic plant solar plant solar module Outdoor photovoltaic system Solar photo voltaic panel Pv-System lines windows glass windows buildings cities towers water towers solar cells alternative energies power generations power supplies architectural styles producing high-rises energies energy sources solar panels power industries formerly exterior views environmental issues facades skyscrapers solar energy panels manufacturing highrises photovoltaic panels solar collectors skyscraper buildings constructions making tower blocks photovoltaic modules sun collectors outdoor shots solar energy systems BRD Photovoltaic panels exterior photographs photovoltaic systems solar paneels outdoor photos solar systems solar installations photovoltaic plants solar plants solar modules Outdoor photovoltaic systems Solar photo voltaic panels Europe's architectonic style produces solar farm hotel complex hotel building hotel facility hotel facilities façade manufactures high-rise building high-rise buildings hotel resort resort complex makes