PlayStation Home
13 Achievements
4-5h
Grand Explorer
Visit 20 unique spaces
6.4%
How to unlock the Grand Explorer achievement in PlayStation Home - Definitive Guide
I found most of mine from the 'Latest' menu and 'Highlights' menu and also the 'Browse' menu, simply find a new space you havnt visited and press to download and visit it. Make sure the space has fully loaded before leaving to the next. (WWW symbol has disappeared)
Here's a list of the spaces I visited:
Home Square
Acorn Meadows Park 'St Patricks Day
PS Talent
Atom Republic Park
Home Tycoon Train Station
The PS4 Experience
The Casino Concourse
Harbour Studio (Your apartment)
Bowling Alley
Auditorium 6
Audi Concert Hall
Aurora 1.8
Novus Prime
No Man's Land: Drydock
Killer Plants From Outer Space
The Western Frontier
Sodium 2
Dragon's Green
Pier Park
D2O District
All you have to do is visit 20 different places. The hardest/longest/most annoying part about this trophy is downloading the new areas. Simply choose any 20 areas and once you have visited 20th one, the trophy will pop. I recommend going to at least the following places since you will need to go there while working on other trophies anyway:
1) Aurora
2) The Complex
3) The Complex 2
4) The Casino: Concourse
5) Acorn Park
6) MIB Headquarters
7) Pottermore Diagon Alley
8) Sony Music Unlimited
9) x7 Club
10) Mall Floor One
11) Mall Floor Two
12) The Casino Complimentary Hotel Room
For the other 8 just pick any other areas that suit your fancy, The HUB, any of the four core districts or any of the developer/publisher worlds.
As recommended by Warbear:
For this trophy, I would recommend downloading whilst in your Harbor Studio. Trying to download in a public space will sometimes queue your downloads. Also downloading in a private space is much much faster.