Later, with the Keihan Electric Railroad being constructed running through the north-western part of its Honmaru, Yodo-jo Castle had been doomed to completely disappear, but when it was designated as a historic site, the preservation movement grew and some repair work is carried out around the Honmaru today to preserve the rock walls and moats which have survived the city development.
さらに、本丸北西部を京阪電気鉄道が貫通するに及び、淀城の消滅は必至となるが、史跡指定によってようやく保存運動が高まり、今日は本丸周辺の整備が進み、開発の手を免れた石垣及び堀が保存されている。