The law in England and Wales says that the law governing foreign property (land, buildings etc) is the law of the country in which the property is situated. Whether you can dispose of that property in your UK will, or you need to make a local will, depends on the law of the country in which your property is situated. Often you will need to make two wills – one in the UK and one abroad – and the two must be consistent.

A particular danger to look out for is the ‘forced heirship’ rules that apply in some countries. These say that a proportion of your property must pass by law to certain of your heirs (often only those in your bloodline – not your spouse’s family), whatever your wishes, and whatever it says in your will.

Another is inheritance tax. Land and buildings, in particular, are likely to be liable to local inheritance tax in the country where they are situated. Foreign inheritance tax can be punitively high, particularly if your beneficiaries are not family members.
You will also have to obtain a valuation of the property for the purposes of probate.
This is a very complex area of law – take specialist advice.