SubstanzWalk: Introduction to Substanzraum

room 20 ECHOES

Westduinpark, Den Haag, South Holland 2566 DP, Netherlands

Alexander Johannes Heil SubstanzWalk - Introduction to Substanzraum Geo-located Audio Walk Location: Westduinpark, The Hague, The Netherlands Narration: Mabel Calvert Verbruggen Duration: ca. 45min 2020

This slightly surreal audio walk is composed with a mixture of synthetic and recorded environmental sounds. These sounds blend with the actual sounds of the environment and create confusion about their origin, which ultimately emphasises your attention to your surroundings. Narrated text fragments from my essay 'Substanzraum, A New Approach To Global Space', accompany this geo-located audio walk.


  1. Download the Walk beforehand! (oval button with indication of MB next to the 'STREAM WALK' button above this text) Even if you have a very good mobile data contract, the most uninterrupted experience is ensured when the sound walk is already downloaded to your Echoes app.

  2. Activate the 'Autoplay' function! When you click 'STREAM WALK' you access the walk. You will enter a map screen and at the top right hand is a 'hamburger menu' (the three horizontal stripes)! Click there and you will be presented with the 'Autoplay' option at exact that position on your screen.

  3. Use so-called 'open headphones'! Open headphones have the advantage that you can hear outside noises more easily and therefore offer better environmental awareness.

  4. If you hold a SubstanzWalk Map in your hand, please travel to Station Markenseplein, Den Haag, The Netherlands (Tram 12/Bus22) and enjoy the walk. If you are not already in possession of a SubstanzWalk Map, please download the printable map from the Stroom Den Haag website:

Enjoy! and drop me a DM about your experience via insta @alexanderjheil

The walk and the map are free. Nevertheless, a Donation is more than welcome and can be made via:


or PayPal:

Alexander Johannes Heil
Alexander Johannes Heil
Alexander Johannes Heil (born 1986 in Hamburg, Germany) received his B.Sc. in Architecture with a focus on architecture-theory and -design in 2017 at the Technical University Berlin and obtained his master's degree (M.Mus) in summer 2020 at the ArtScience Interfaculty (Royal Conservatory and Royal Academy of Art, The Hague). His work has recently been shown at the Royal Academy of Art The Hague, the Royal Conservatory The Hague, in group exhibitions in The Hague, and two solo exhibitions in Berlin (2017 and 2018). Currently he is exploring a new concept of space, which is analog to the dialectic of mold and cast. It considers global space filled with actual substances traveling throughout our planet, shaping each other through time and gravity and thus shaping the space we live in. This conception of space is called Substanzraum, the space of substance.



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