When do they open and close?

A must see venue.

They are open 7 days a week all year round but their tour times vary and are updated weekly. From their site: Tour times are updated every Friday. Sat, Feb. 24th: 9,10,11,12,1,2 Sun, Feb. 25th: 9,10,11,12,1,2 Mon, Feb. 26th: 10,12,2 Tues, Feb. 27th: 10,12,2 Wed, Feb. 28th: 9:30,11,12:30,2 Thurs, Mar. 1st: 9:30,10,12:30,2 Fri, Mar. 2nd: 11,12:30,2 Sat, Mar. 3rd: 9,10,11,12,1,2 Sun, Mar. 4th: 10,11,12,1,2