The glass in the windows and doorways resemble a pattern of a tortoise shell, and reflect light differently depending on which room you are in, drastically changing the colors you see. I think my favorite part of this floor was the giant light fixture and adjacent ceiling, which spirals outwards of the light to mimic the lines in a snail shell. And the light itself is intricately decorated like some sea creature.
Cost: €20.35 for adults, €16.30 for kids 7-18, free for kids 7 and under
Hours: Mon-Sun: 9am-9pm (last entrance at 8pm)
Time to self-tour: 1-2 hrs
Note: Definitely buy your tickets ahead of time as lines can get long.
Tickets are good for any day and any time making it very