British Pillbox/Bunker WW2 era - complete with algae and moss growth (N Gauge / Scale) 1:148 scale.
 
This is a great background piece to any layout. Many of them are still found scattered across the country, They stand proud as a reminder of WW2.
 
"The average pillbox required 174 man hours to construct, and used in excess of 200Tons of concrete!"