Prime Minister Tarique Rahman was scheduled to inaugurate the July Mass Uprising Memorial Museum in Dhaka on 5 August.
The ceremony was scheduled for 9am, with the museum due to open to visitors afterwards.
The museum has been established on about 18 acres of the former Ganabhaban government-residence site.
Its grounds in Sher-e-Bangla Nagar include memorial areas, a July stage, a theatre and a symbolic Aynaghar installation.
The displays include photographs, documents and objects connected to the July uprising, as well as symbolic graves commemorating those killed.
The museum also presents material on political events and movements from earlier decades, including the 1986 election, the 2006 Logi-Baitha violence and events after 1/11.
The project was created through a November 2025 notification of the Ministry of Law, Justice and Parliamentary Affairs and was overseen jointly by the Public Works Department and the National Museum.
The project allocation was Tk1.23 billion, with Tk1.10 billion reported as spent and Tk125.3 million identified for return to the treasury.
Concerns have been raised over procurement and spending in the project, including allegations of irregularities that have not been resolved in the evidence provided.
Cultural Affairs Minister Nitai Roy Chowdhury said the museum was intended to present the uprising to younger generations and preserve its historical record.
Museum authorities said it would operate from morning until 6pm daily except Thursdays and public holidays.
Entry fees were set at Tk50 for adults, Tk20 for children, Tk500 for citizens of SAARC countries and Tk2,000 for other foreign visitors.
Separately, July Shaheed Memorial Foundation chief executive Kamal Akbar said the foundation faced financial pressure and had requested an emergency Tk100 million allocation for operating costs.