Time Out says
A short drive from Katoomba is the National Pass walking trail, which is where you’ll find Princes Lookout and Wentworth Falls. Here you need to make a choice: if you want to see the falls and nothing further, have a picnic near the conservation hut and be on your way after 15 minutes. If you came for adventure, prepare for a three-hour walk through the eucalypt forest to see Wentworth Falls up close, as well as Empress, Silvia and Lodore Falls. The looped track is just over five kilometres, however, it’s a hard trek and you’ll want to pack a bag with water, sunscreen and snacks for the route. The mountain track hugs the cliffs, overlooking the Jamison Valley, and ends with a thigh burning Giant Staircase.