Barcelona Path Question

[wrafter]

[Apologies if placed in wrong forum/location/]

SLF here, not in industry.

At 14.46hrs local time today a large passenger plane flew directly overhead, over Barcelona city centre and over Barcelona's central park (Ciutadella) and proceeded over the twin towers (Mafre/Hotel Arts) before swinging right and onto the airport.

It's pretty rare for a plane to fly over the city, but it happens once or so a week - I work alone in the top floor of a building in city centre - and it's quiet up here but for the birds and planes, so I can tell.

Normally planes come in on a more or less parallel line with the shoreline.

What might result in a plane taking this route over the city? Does it mean it's late, or in trouble, or has political/important passengers?

Or what's happening?

Thanks.