Nearly a kilometer (a half mile) north of the center of Llanberis in Padarn Country Park, the Welsh Slate Museum (tel. 01286/870630; www.museumwales.ac.uk/en/slate) is a minor museum in the workshops of Dinorwic slate quarry, one of the largest in Britain until it closed in 1969. Slate-mining communities were intensely Welsh, nonconformist in religion, and radical in politics, as films shown here reveal. The exhibitions, which should take no more than 30 minutes of your time, are mainly of interest to those who have a particular interest in this aspect of Welsh life of long ago. Admission is free. It's open from Easter to October daily 10am to 5pm; off-season Sunday to Friday 10am to 4pm. Take the A4086 at the start of the lake railway and Padarn Country Park.
Electric Mountain Visitor Centre, along the A4086 (tel. 01286/870636; www.fhc.co.uk/electric-mountain.htm), is a scientific-looking observation center, functioning as the meeting point between the public and one of the most technologically advanced power stations in Wales. Set about .4km (a quarter mile) north of Llanberis, it incorporates a hydroelectric system harnessing the waters of a pair of nearby lakes, whose turbines and channels are concealed deep within the mountains so as not to spoil the natural beauty of the nationally protected site. Entrance to the visitor center is free. Tours for the general public are conducted daily June to August 9:30am to 4:30pm. Reservations are advised. Once you get here, if a staff member isn't busy with other tasks, you can take a tour of the turbines for a fee of £7.50 for adults, £6 seniors, £3.75 for children 4 to 15, and £11 to £43 for a family ticket.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.