Mausoleum vs. Museum

"A mausoleum is a large and impressive tomb, usually constructed for a deceased leader. Grant's Tomb in NYC is an example.

The word came from the Mausoleum of Maussollos, the tomb of King Mausolus, the Persian satrap of Caria, whose large tomb was one of the Seven Wonders of the Ancient World."

The word "museum" comes from the Latin museum, plural musea, which is in turn derived from the Greek mouseion, which refers to a place or temple dedicated to the Muses, the patron divinities in Greek mythology of the arts.
It is said that there are more museums per person in Finland than in any other country in the world.

Source: Wikipedia