Even if you're a real nowhere man living under the sea in an octopus's garden, you probably already know that 50 years ago (Feb. 9, 1964, to be exact) the Beatles kicked off Beatlemania in the United States with their first appearance on "The Ed Sullivan Show."
The Fab Four's subsequent globetrotting blazed a trail that, half a century later, remains worth following.
Particularly if you can avoid an overload of gratuitous Beatles song titles along the way.
Here are some of the world's best places to relive the original magical mystery tour.
1. Liverpool, England
The city where it all started has traded heavily on the Beatles as part of efforts to transform itself from a declining industrial seaport into a tourism and cultural destination.
Mercifully, it works.
Obvious attractions include the well-executed Beatles Story (Britannia Vaults, Kings Dock Street, +44 151 709 1963); the reconstructed Cavern Club (10 Mathew St., +44 151 236 9091); and tours that hit childhood homes and lyricized locations such as Penny Lane.
These are balanced by non-Beatles attractions.
The city has impressive Anglican and Catholic cathedrals, the iconic ferry across the River Mersey, the Tate and Walker art galleries and the wonderful (and free) waterfront Museum of Liverpool.
The latter of these pays homage to the city's maritime heritage and a musical legacy that goes far beyond John, Paul, George and Ringo.
2. Hamburg, Germany
Lured by the prospect of regular paychecks, the embryonic Beatles packed their guitar cases for Hamburg in 1960.
Here they refined their act and lineup during several seasons of relentless gigging in front of indifferent crowds in grimy nightclubs.
Fans can take tours or simply explore Reeperbahn, a seedy-in-places district of brothels and nightspots where the band played several venues during their time here.
The Kaiserkeller (36 Grosse Freiheit, +49 40 317 778) is among the most famous.
Modern Hamburg is a vibrant source of new, mainly electronic, music and nightlife.
Like Liverpool, it has a distinctive church, the baroque St. Michaelis (Englische Planke 1, +49 40 376 780) and a museum exploring the city's maritime past (Peter Tamm Sen. Stiftung Kaispeicher B Koreastrasse 1, +49 40 30 092 300).
3. Rishikesh, India
By 1966 the Beatles were experimenting -- musically and pharmaceutically.
Their altered outlook took them to Rishikesh, in northeast India's Himalayan foothills, to attend the ashram of Maharishi Mahesh Yogi, an Indian guru who developed and taught transcendental meditation.
These days the ashram, which once overlooked the Ganges, is closed and is slowly being reclaimed by vegetation.
But Rishikesh, an important Hindu center, remains open for business -- billing itself as India's leading destination for yoga and adventure sports, although probably not at the same time.
Proximity to Delhi makes it a good escape from the Indian capital for some whitewater rafting or a stay at one of its many yoga ashrams (among them Parmath Niketen, +91 135 243 4301).
Not a precisely Beatles experience, but in the world of transcendental meditation, close is sometimes all you get.