Bishop Rock is a small rocky ledge jutting out of the sea 4 miles west of the Isles of Scilly in Cornwall. It’s the world’s smallest island with a building on it, as recognized by the Guinness Book of Records.
In the old days the 49-meter lighthouse had to rely on paraffin vapour lamps and, before that, candles. Today there are generators and batteries and a helipad was built in 1976. Today the lighthouse has ten floors, and up to four visitors can stay here for a week to three weeks.