The Tomb of the Unknown Soldier is dedicated to the unknown soldiers who have given their lives for Poland. It is one of many such national tombs of unknowns that were erected after World War I, and the most important such monument in Poland.
The monument, located at Piłsudski Square, is the only surviving part of the Saxon Palace that occupied the spot until World War II. Since 2 November 1925 the tomb houses an unidentified body of a young soldier who fell during the Defence of Lwów. At a later date earth from numerous battlefields where Polish soldiers have fought was added to the urns housed in the surviving pillars of the Saxon Palace.
The Tomb is constantly lit by an eternal flame and assisted by a guard post by the Representative Battalion of the Polish Army. It is there that most official military commemorations take place in Poland and where foreign representatives lay wreaths when visiting Poland.
The changing of the guard takes place on the hour of every hour daily and this happens 365 days a year.
References:The Temple of Edfu is one of the best preserved ancient shrines in Egypt. It was built in the Ptolemaic Kingdom between 237 and 57 BC.
Edfu was one of several temples built during the Ptolemaic Kingdom, including the Dendera Temple complex, Esna, the Temple of Kom Ombo, and Philae. Its size reflects the relative prosperity of the time. The present temple initially consisted of a pillared hall, two transverse halls, and a barque sanctuary surrounded by chapels. The building was started during the reign of Ptolemy III Euergetes and completed in 57 BC under Ptolemy XII Auletes. It was built on the site of an earlier, smaller temple also dedicated to Horus, although the previous structure was oriented east–west rather than north–south as in the present site.