Which museum makes viewing art somewhat difficult because it dictates the visitors' paths, contains a sloping floor, and permits only an up-close or distant view of most artworks, with no in-between vantage point?

1492

columbus changes the shape of the world

ferdinand and isabella unite and create catholic spain

jews and moslems driven out of spain

lorenzo de medici dies

no one buying art and supporting city like before, his brother had been assassinated slightly before

florence to rome renaissance shift

east to west transition of church administration to the vatican

g

c would  be the answer.