If you visit Loch Ness, you probably won't see Nessie, but you will see a lot of confused tourists, thanks to confusing road signs that local businesses have been putting up.
For instance, many tourists who are looking for Urquhart Castle wind up in the Loch Ness Monster Visitor Centre because of a large road sign for "Glen Urquhart Castle" that points toward the Visitor Centre. The word "Glen" is in tiny, small letters, and most people probably wouldn't realize that Glen Urquhart Castle is different than Urquhart Castle.
Urquhart Castle is a real castle (and definitely worth seeing). Glen Urquhart Castle is just a wooden building attached to the Loch Ness Monster Visitor Centre.