Site investigation works have started at the Festival Gardens site near Liverpool's Otterspool Promenade in advance of a proposed housing development.
Owner Langtree has begun clearance and ground investigation works in advance of the remediation works and subsequent development of the 25-acre site, which has planning permission for up to 1,400 new homes.
The landmark comes a year after the formal gardens of the original festival park were re-opened following a multi-million pound refurbishment.
John Downes, chief executive of Langtree, said: "The government's initiatives around kick-starting the housing market are clearly beginning to have an impact and there's been an increasing number of positive announcements by listed house builders in recent months.
"The market's starting to move and it makes sense to prepare the land so that house builders can take advantage of this unique site which is both in the park and on the waterfront."
Since the Festival Gardens re-opened more than 100,000 people have walked through its mix of formal and oriental gardens and woodland walks.
The site boasts several vantage points with views across the river to the Welsh hills and has entrances on both Riverside Drive and Otterspool Promenade.