What are other attractions than Royal Yacht Britannia that are worth visiting in Edinburgh?

The other must-see attractions in Edinburgh are:<a href='/camera-obscura-world-of-illusions-l104361/'>Camera Obscura & World of Illusions</a><a href='/the-edinburgh-dungeon-l2595/'>The Edinburgh Dungeon</a><a href='/holyrood-distillery-visitor-centre-shop-l140176/'>Holyrood Distillery Visitor Centre & Shop</a><a href='/royal-mile-l2594/'>Royal Mile</a><a href='/edinburgh-old-town-l8803/'>Edinburgh Old Town</a>

What are the most popular Royal Yacht Britannia tours and tickets?

The best Royal Yacht Britannia tours and tickets are:<a href='/edinburgh-l44/edinburgh-hop-on-hop-off-bus-pass-with-3-city-tours-t36220/'>Edinburgh: Hop-On Hop-Off Bus Pass with 3 City Tours</a><a href='/edinburgh-l44/edinburgh-hop-on-hop-off-bus-tours-firth-of-forth-cruise-t36380/'>Edinburgh: Hop-On Hop-Off Bus Tours & Firth of Forth Cruise</a><a href='/edinburgh-l44/edinburgh-city-highlights-self-guided-smartphone-tour-t408513/'>Edinburgh: City Highlights Self-Guided Smartphone Tour</a>