Multiple itemscope location schemes - schema.org

Question

I use itemscopes for a gallery, based in Brazil but they also have two other locations for the exhibitions somewhere else, all of them showing up in the footer.
Can I use multiple Location Schemes on a page? If so, how would I do this? Is it fine if I just duplicate the following, or should I split it up with the first belonging to Organization and the other two to Places?
<p itemscope itemtype="http://schema.org/Place">
<span itemprop="name" style="display:none;">Gallery</span>
<span itemprop="address" itemscope itemtype="http://schema.org/PostalAddress">
<span itemprop="streetAddress">{!! $street !!}</span><br>
<span itemprop="addressLocality">{!! $town !!}</span><br>
<span itemprop="postalCode">{!! $postal !!}</span>
<span itemprop="addressRegion">{!! \App\Info::val('adresscountry') !!}</span><br>
<span itemprop="telephone">{!! $phone !!}</span><br><br>
<span>{!! $openinghours !!}</span><br><br>
<span itemprop="email">mail#gallery.com</span><br><br>
</span>
</p>
It is one organization that owns three places where exhibitions are held. It would be nice if every place would be featured on search machines, no need for the specific exhibitions.

Answer 1

Note that the following doesn’t necessarily lead to rich results in search engines. In case of Google Search, it seems they don’t offer a rich result for places (and even if they would, it would probably require a dedicated page per place). However, they have a rich result for events.
You could provide an Organization item with three location values:
<div itemscope itemtype="http://schema.org/Organization">
<div itemprop="location" itemscope itemtype="http://schema.org/Place" id="loc-1"><!-- location 1 --></div>
<div itemprop="location" itemscope itemtype="http://schema.org/Place" id="loc-2"><!-- location 2 --></div>
<div itemprop="location" itemscope itemtype="http://schema.org/Place" id="loc-3"><!-- location 3 --></div>
</div>
For each ExhibitionEvent, you could reference its location (assuming that the places are part of the footer on the event pages, too) via the itemref attribute:
<div itemscope itemtype="http://schema.org/ExhibitionEvent" itemref="loc-2">
</div>