1. Elgin Marbles (Elgin Marbles):

These ancient Greek stone sculptures are housed in the British Museum in London and include sculptures from the Parthenon and Atreus treasury on the Acropolis.
In the early 19th century, Lord Elgin, a British diplomat, obtained permission from the Ottoman Empire to bring the sculptures to England.
Despite Greek demands for their return, the British government refused on the grounds that the sculptures had been legally acquired.
2. Benin Bronzes:

These metal sculptures and bas-reliefs were made between the 15th and 19th centuries and were taken by the British army during the sacking of Benin City in 1897.
Recently, the Horniman Museum in London and the University of Cambridge agreed to return some of the bronzes to Nigeria.
3. Cannon of Kandy:

The Dutch government announced that it would return the cannons to Sri Lanka, where they had been seized by the forces of the Dutch East India Company in 1765.
4. Chinese cultural relics:

The British Museum owns a large number of Chinese artifacts, but Britain refuses to return them, citing the British Museum Act.
Chinese officials and the public have demanded the return of the artifacts, but there is also a view that some of the artifacts were trafficked out by the Chinese themselves.
5. Headdress of King Montezuma:

This headdress made of feathers is currently in the Museum of Ethnology in Austria.
The Government of Mexico has requested the return of the headdress, but it remains in Austria for the time being because of possible damage to the headdress during transportation. [Read More]