Lonely Planet review for Seddon St
Waihi's main drag has interesting sculptures, information panels about Waihi’s golden past and roundabouts that look like squashed daleks. Opposite the visitor centre, the skeleton of a derelict Cornish Pumphouse (1904) is the town's main landmark, atmospherically lit at night. From here the Pit Rim Walkway has fascinating views into the 250m-deep Martha Mine. If you want to get down into it, the mining company runs 1½-hour Waihi Gold Mine Tours.
The Historic Hauraki Gold Towns pamphlet (free from the visitor centre) outlines walking tours of both Waihi and Paeroa.