Talati de Dalt is one of many talaiot/taula sites on Menorca. It is the only one we visited but I believe it is one of the largest, and we found that we could spend an hour there easily with our young daughter.
You would have to go by car/taxi. We drove, and it is well signposted off the main Mao-Ciutadella road, closer to Mao.
There is limited parking but we were the only visitors when we went so I can't see it would be a problem. My recommendation is to ensure you drive far enough along the road to find it - it looks like you are going wrong or have missed it but you will suddenly come across it around a bend if you keep going.
There is a entrance kiosk selling postcards, with some tables and chairs out under some olive trees, which is a nice place to rest after your visit (although take your own drinks) and you get a very good English language guide to the site so you know what you are looking at, which is unusual on Menorca where you usually have to try and unpick the Spanish information.
The site is spread out but not so much that you have to hike around it. You wil basically see the ruins of a village, including some houses you can go into, two natural caves, a taula (the standing stones like Stonehenge), and some general ruined bits.
It is quite hard to envisage what it would have been like all those years ago, but the information does help and we found it enjoyable. Our three-year-old also liked it and we played at guessing where the bedrooms would have been, and what they would have cooked, etc.
There are no toilets so do go before you visit. The smell of wee in some parts indicated some people had been caught short, which is pretty gross.
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