From Lerwick, take the A970 south signposted towards Sumburgh for about 17 miles. Stay on this road, going past the first Levenwick turning, and half a mile later a signpost on the right side of the road, points left to the driveway to the site.
From Sumburgh, take the A970 north for about 7 miles. Stay on the main road for 3/4 mile after the Levenwick turning until you see a signpost on the left side of the road, pointing right to the driveway to the site.
Island maps are available from the Tourist Information Centre in Lerwick, situated at the town centre.
Car rental from Lerwick: Star Rent-a-car, or Bolts Car Hire.
By bus: here's a link to some handy timetables. Transport information site: Zet Trans.
Shetland can be reached by boat (from Aberdeen and Orkney to Lerwick with Northlink Ferries) or by plane to Sumburgh.