In the late 1800s and early 1900s many urban parks were opened to the public – either new developments, or former private gardens to which the public were given access.
Ar ddiwedd y 1800au a dechrau'r 1900au agorwyd llawer o barciau trefol i'r cyhoedd – naill ai'n ddatblygiadau newydd, neu hen erddi preifat oedd yn cynnig mynediad cyhoeddus am y tro cyntaf.