Misc: In the nursery rhyme, who visited the person with a little nut tree?

Questions

Through which mountain range in the United States does the Blue Ridge Parkway run?

Which mountain was called Peak XV until 1865 when it was renamed in honour of a British geologist?

In which english county is Helvellyn?

What is the name of the mountain near Rio de Janeiro from whose peak the giant statue of Christ the Redeemer overlooks the city?

Which group of people is traditionally banned from Mount Athos in Greece?