Alone is fine although I went with other people. If you want a tour of some of the areas, get there early to reserve a time. Lots to see and very interesting to see the beginnings of modern research.
By yourself or with another, you'll still enjoy it! They offer tours, so you really won't be alone anyway. ;)
You can go alone, but I think it's always more fun with someone else.
Either way is fine, alone you can take more time looking at things...a group may be able to get more access if you schedule ahead of time
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