This mausoleum is where the late Zambian presidents Levy Patrick Mwanawasa (1948–2008), Frederick Chiluba (1943–2011) and Michael Sata (1937–2014) are buried. Remarkably both Mwanawasa and Sata died while in office; the latter's tomb will be completed in 2018. It's an interesting enough sight, but the US$15 entry is a bit steep, though does include a guided tour.
Be aware photography is prohibited of the building opposite the main road, which is a former parliament building and now used by the Ministry of Defence.