The Grand Stairway is a very memorable section of the National Pass in the Blue Mountains National Park. The stairway is reported to be 'the tallest outdoor staircase in Australia' and was built in the early 1900's by hand (and dynamite). This stairway, and the rest of the National Pass, was built by a team nicknamed 'the Irish Brigade' for the cost of £430 . Today, the Grand Stairway is well-maintained and provides walkers access to the valley below Wentworth Falls.