Is this really a tourist attraction? Is it a viewpoint?

Bridge is closed and inaccessible

Not sure this is a wastewater plant:
Most wastewater plants have access tracks leading to them.

From imagery, could be sheep pens.
Local survey recommended

Car park now here

Unable to answer "What’s the surface here?" – Foot Path – osm.org/way/830910879 via StreetComplete_ee 61.0:

no path visible from the eastern side - this appears to be the fence line

Unable to answer "What surface does this road have?" – Service Road – osm.org/way/1393366542 via StreetComplete_ee 61.0:

no road here

Unable to answer "Do you have to pay to use this restroom?" – Restroom – osm.org/way/321127076 via StreetComplete_ee 61.0:

donation suggested for toilets

"No longer Spar. Stayed next door 8 June 2025"
OSM snapshot date: 2025-05-11T16:17:16Z
POI name: Go Local
POI types: building shop-supermarket
#organicmaps ios

Unable to answer "What height limit is indicated here?" – underground: Track / Land-Access Road – osm.org/way/205388764 via StreetComplete 58.2:

There is no bridge here

Marked as construction zone over 3 years ago. No imagery showing any signs of construction. Also checked Google imagery and same.