Mis forMine (hole)
Mines are very large holes that people dig to get minerals out of the ground. Minerals can then be processed into useful things like metal.
Mines can be underground tunnels or they can be open cut mines like in the picture. Open cut mines are more common today as they can be mined easier and more safely than underground mines, using enormous trucks and digging machinery.
A museum is a place where old and interesting things from all over the world are kept for people to come and look at. Museums are a great source of information.
A palace is a big, grand house. Palaces are often places that very rich or important people live. Royalty, high ranking members of a religion and important politicians often live in palaces.