3 Best Sights in Wales

Discovered in 1987, these mines date back 4,000 years to when copper was first mined in the area. You can take a tour and learn about the technology that ancient people used to dig the tunnels, which are thought to be the largest surviving prehistoric mines in the world.

At these caverns you can descend 500 feet on Britain's deepest underground railway to a mine where you walk by an eerie underground lake. Here Victorian working conditions have been re-created, and the tour gives a good idea of the difficult lives the miners had to endure. Part of the mine is now used as a space to mature cheese. Wear sturdy footwear when visiting the mine—during busy times you may have to climb 70 steps as part of the tour.

Outside the village of Ponterwyd, 10 miles east of Aberystwyth, this 200-year-old silver-lead mine is now a museum where you can tour reproductions of mining buildings and some original machinery, including working waterwheels. Kids over the age of eight can also enjoy a few harmless scares on the Black Chasm ghost tour, though very young ones will be better off sticking to the Woo Hoo Woods adventure playground. It's cold in the mine, even on hot days, so bring a jacket or sweater. Times can vary; call to check, especially in the off-season.