This lookout provides an excellent panoramic view of the southern part of the line of lode, particularly the old Zinc and NBHC mines and the current Perilya operation. This hill is so named because it was the site of the Block 10 Mine's concentration mill which was erected in 1903 and connected to the mine by an aerial ropeway. Evidence of the mill, which operated until 1923, still survives. The hill is also the location of four reservoirs which contribute to the water supply system. Block 10 Lookout is at the end of Galena Street.

Nearby, in Wills Street, are the following heritage buildings:

Railwaytown Post Office - 1925
The original Railwaytown Post Office was erected in 1900 opposite the Gasworks Hotel. The present brick building was erected adjacent to the Burke Ward Hall in 1925. Together with the hall and the row of verandahed shops on the opposite corner, it provided a service centre for Railwaytown. Broken Hill's main railway sidings and locomotive servicing facilities for the Silverton Tramway were located in Railwaytown, a suburb of Broken Hill. the sidings ran to the south and north to serve the mines. The main passenger station was at Sulphide Street.

Tramway Residence - c1902
This Federation style red brick residence was erected for the officer-in-charge of the Government-operated street tramway system. The system commenced in 1902 and ceased in 1926 due to competition from motor vehicles. At its peak, the tramway had a staff of 60, with 14 engines and 36 carriages operating at half-hourly intervals. Nearby was a large shed for the engines and carriages.

AJ Keast Park
AJ Keast Park, in Gypsum Street, was originally dedicated as Hillside Reserve in 1897. It was renamed in 1940 in honour of Asdruebal James Keast, General Manager of the Zinc Corporation from 1936 to 1946. Keast was responsible for major surface construction and underground development at the Zinc Mine between 1936 and 1939. The Zinc Corporation converted the reserve into a well equipped public recreation area in the 1940s.

Hillside Hotel - 1891
This brick and stone hotel in Gypsum Street was opened in 1891 with Dennis O'Callaghan as first licensee. At one time there were four pubs in the western area of Broken Hill - the Gasworks, the Hillside, the Freiberg and the South Australian, which was the first to open in 1888.

Burke Ward Hall - 1905
This large stone public hall in Gypsum Street was erected for the citizens of Railwaytown in 1905. The foundation stone was laid by Mayor J. Ivey in 1904. The building was restored by Council in 1988.