mark or shape that always has a particular meaning

Merchant City sign. Glasgow. Scotland
Heaven in Brick Lane
Footpath sign on Southdowns Way showing bridleway, footpath, near Petersfield
Old fashioned road sign to Borrowdale, taken in Keswick, Lake District
Bashful Alley a street name in Lancaster town
Don't feed pigeons sign
Keep dogs on leads sign
No Drinking sign below one way sign, Belfast
Keep Left sign - Linenhall St, Belfast
Rainforest cafe sign
Neon sign for piano bar