Before going to the Louvre I highly suggest making a list of the art you really want to see and where it is in the museum because it's easy to get lost and turned around.
A beautiful stained glass museum in Otaru whose stained glass is from the same century and time as the building it's displayed in but not from the same country.
The merlion is considered the emblem of singapore, and maybe my white whale. While I may have missed it I did get a chance to visit the beautiful Esplande theaters even if briefly.