Concierge.com's insider take:

One of the more unusual but fun ways to catch some scenery is to take a seafari. Operating out of Skye and Easdale by Oban, Sea.fari runs wave-skimming speedboat trips that aim to take in minke whales, seals, deer, and, if you get lucky, the occasional golden eagle. The Easdale trip visits the infamous Corryvreckan whirlpool (Easdale, 44-1852-300-003; Armadale Pier, Sleat, Isle of Skye; 44-1471-833316). Long before its inclusion in the Harry Potter films, the steam train journey from Fort William to Mallaig was already a hit. The Jacobite steam train, pictured, passes Ben Nevis and crosses over the Glenfinnan Viaduct, (44-1524-737751).