The open bookcases are for the people of Bad Homburg. You can swap and read books there.

There are these open bookcases in Bad Homburg:

Dornholzhausen (Sophie-Opel-Platz/Lindenallee corner Ricarda-Huch-Straße)

Berliner Siedlung / Gartenfeld (Am Mariannenbrunnen, Bommersheimer Weg/corner of Kolberger Weg. There is also a shelf at the entrance to the SFZ Gartenfeld. The shelf is a "bookcase" in Gartenfeld)

Gartenfeld forecourt of the Herz-Jesu-Kirche (Heuchelheimer Straße 92 A)

Gonzenheim (corner of Friedrichsdorfer Straße / Kirchgasse 2, opposite the clubhouse)

City center (Kurhaus / red telephone booth)

Kirdorf (bus stop in Bachstraße)

Ober-Erlenbach (old town hall on the square in front of the local history museum)

Ober-Eschbach (Am Kirchplatz)