LaLaport is a chain of shopping centres in Japan, hosting a variety of shops, restaurants, cinemas, exhibition spaces, and play areas. They're all operated by the Mitsui-Fudosan Group, with the first one being constructed in the 1980s.
So let's get to the name and logo.
The 'port' part of the name comes from the word port, although in this case it's said to be derived from French, hence the "La". However, in French 'port' is masculine (must be because of the seamen...) so it should actually be "Le". There's another reason for the "LaLa", however, as it evokes a feeling of fun - think "lalala" (I'm not making this up) - and possibly hints towards a bit of French style "ooh la la".
I'll be honest, visiting a LaLaport can be fun (I've been to a few of them, and regularly visit at least two). There are tons of shops, plus there are usually play areas and game centres for kids. They also provide strollers and, in most cases, changing areas for younger children.
Which brings us neatly on to the logo.
I originally thought it was an abstract graphic representation of "LaLa", but it apparently represents parents with two kids. As a shopping centre that does cater nicely to families, it's an appropriate symbol.
There are currently 14 LaLaports across Japan, and they're generally very well-maintained, contain loads of well-known shops like Uniqlo, Muji, Beams, etc, and - like many places in Japan - they're generally clean and safe.
And they have a very nice, minimalist logo.