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The dome will be closed to visitors from 7 to 11 July and from 21 to 25 July.
Please note: it is sometimes necessary to cancel confirmed visits at the last minute for security reasons or due to the weather conditions. We regret that, if this should occur, it is not technically or practically feasible for us to notify you of the cancellation in advance by email, telephone or fax, given the large number of bookings we receive.