Port Elizabeth's Feather Market Centre is located on the corner of Baakens Street and Military Road, Central and, as its name implies, was an extension of the original commercial activities once carried out in Market Square.
Feather Market Centre, which has played host to glamorous business and cultural events for over a century, was proclaimed a National Monument in 1980. 
It has since been beautifully refurbished and transformed to offer a unique mosaic of venues for conferences, concerts and exhibitions of every size and nature.
It does have Disabled Access!
Geolocation
-33° 41' 53.0153", 25° 31' 25.7109"
References

 9/2/073/0018 Declaration Type:  Provincial Heritage