The Beatles lived and worked at various venues in the English capital (yes, there are tours), but few locations have as much of a connection with the band as Abbey Road Studios (3 Abbey Road, near St. John's Wood tube station).
The Fab Four recorded several albums here, including 1969's "Abbey Road," which features a hirsute Lennon, McCartney, Harrison and Starr striding over the nearby pedestrian crossing.
There's no public access to the studios, which still host top music acts.
But that hasn't stopped thousands of visitors scrawling their names on the building's boundary wall or halting traffic to recreate the famous crossing image.
As a bonus, McCartney still lives nearby, and sightings aren't unknown.
Newlyweds John Lennon and Yoko Ono began their 1969 honeymoon with a highly publicized "bed-in" at the Amsterdam Hilton (Appollolaan 138, +31 710 6000), where they invited the press into their room to promote "bed peace" and "hair peace."
The room is now known as the "John and Yoko suite" and can be reserved by guests.
The couple wound up in the Dutch capital after their own mini-tour of Europe.
They'd tried to marry on a ferry across the English Channel (P&O run a regular service, but still no weddings) before succeeding in Gibraltar -- a fact the British territory continues to celebrate thanks to the number of international weddings it now hosts.
6. Obertauren, Austria
After Amsterdam, John and Yoko zipped down to Vienna for another peace-based press conference, this time in the city's luxury Sacher hotel (Philharmonikerstrasse 4, +43 1 514 560) -- until then famous only for giving the world a preposterously rich chocolate cake.
This wasn't Austria's first brush with the Beatles.
In 1965, the band decamped to the charming central Austrian ski resort of Obertauern to film snow scenes for their movie "Help!"
The band stayed at the Hotel Eidelweiss, the modern incarnation (Römerstrasse 75, +43 6456 7245) of which avoids any mention of the Beatles on its website, although it does depict them in what appears to be the men's toilets.
7. New York
Lennon had wanted to take his bed-in to New York, but was prevented from setting foot in the United States at the time due to a previous conviction for cannabis possession.
He and the Beatles, however, paid several other significant visits to the city.
First there was the historic February 9, 1964, television appearance at the now-named Ed Sullivan Theater (1697 Broadway, +1 212 975 4755).
More history was made several days later when The Beatles became the first rock band ever to play Carnegie Hall (881 7th Ave., +1 212 247 7800).
The band returned to play New York the following August, but that trip was eclipsed a year later when they performed at Shea Stadium in Flushing Meadows.
This is believed to be rock and pop music's first-ever stadium gig.
Shea was torn down in 2008 to provide parking space for the New York Mets' new Citi Field (123-01 Roosevelt Ave., +1 718 507 6387), but there are plenty other non-Beatles attractions nearby, particularly the space age relics of two World Fairs (Grand Central Parkway, +1 718 760 6565).
John Lennon, of course, later lived and was killed in New York outside his residence at the Dakota Apartments (corner of 72nd Street and Central Park West in Manhattan).