2 Best Sights in Orkney and Shetland Islands, Scotland

It was on St. Ninian's Isle that a schoolboy helping archaeologists excavate the ruins of a 12th-century church discovered the St. Ninian treasure, a collection of 28 silver objects dating from the 8th century. This Celtic silver is housed in the National Museum of Scotland in Edinburgh (a point of controversy), but good replicas are in the Shetland Museum and Archives in Lerwick. Although you can't see the silver, walking over the causeway of golden sand (called a tombolo or ayre) that joins St. Ninian's Isle to the Mainland is an unforgettable experience. From Sumburgh head 4½ miles north on A970, turn left onto the B9122 at Skelberry, and continue for another 4 miles to Bigton.

A Romanesque church can be seen at the Brough of Birsay, a tidal island with the remains of an early Pictish and then Norse settlement. (Brough is another word for "fort".) The collection of roofless stone structures on the tiny island, close to Birsay, is accessible only at low tide by means of a concrete path that winds across the seaweed-strewn bay. The path is slippery, so boots are essential. To ensure you won't be swept away, check the tides with the tourism office in Kirkwall or Stromness before setting out. The cliffs at the far side of the island are stunning but be very careful as you look for puffins.