Question: The Monument to the Unknown Hero built in 1934-1938 is located in which country and is similar to many other tombs of the unknown soldier?
Sentence (from "Monument to the Unknown Hero"): The Monument to the Unknown Hero (Serbian: Споменик Незнаном јунаку / Spomenik Neznanom junaku) is a World War I memorial located atop Mount Avala, south-east of Belgrade, Serbia, and designed by the sculptor Ivan Meštrović.
Relevant evidence: Yes