A music pavilion, in which David Bowie played shortly after the release of his first hit single Space Oddity, was protected with a Grade II listing.
The singer appeared on 16 August 1969 in front of a small audience in the Croydon Road Recreation Ground.
The star, who died in 2016, is said to have written the lyrics to Life On Mars about his steps in London.
The bandstand of 1905 is located in Beckenham, where Bowie lived with Mary Finnigan, his beloved landlady.
Soon after Space Oddity, Bowie and his friends organized the Growth Summer Festival.
The bandstand was the centerpiece of the one-day festival that Bowie co-organized, moderated and performed exactly 50 years ago.
The event was intended to raise money for a lasting basis and to start Finnigan's Beckenham Arts Lab project, which began as a folk club in the back room of nearby Three Tuns pubs.
Later, Bowie inspired to write the seven-minute song Memory Of A Free Festival.
Duncan Wilson, Director General of Historic England, said, "It's a rare survival of a historic iron foundry.
"But its importance as a place that inspired David Bowie shows us how powerful our historical places can be and how important it is that we protect them so that they inspire people in the years to come."
The first music pavilions in England were built in the gardens of the Royal Horticultural Society in Kensington in western London in 1861.
The Beckenham Bandit Pavilion, owned by the Bromley Council, has been awarded a grade II rating by the Department of Digital, Culture, Media and Sports on the advice of Historic England.
It is believed to be the only surviving example of the iron foundry McCallum and Hope in the country.
The festival, now in its 50th year of existence and known as Bowie's Beckenham Oddity, takes place on Saturday.