As far as tours etc. I found the interior of Peru to be more fun. Cusco Machu Picchu e.t.c.
Cusco there's a hotel built over the ruins of the Incan palace. The Dominican order of the catholic church is based next door. The church / seminary is built over the Incan temple.
I had an English speaking tour guide and ditched him. I tagged along with a Spanish speaking tour guide. 2 different sides of history, very eye opening.
There's a lot of tours from Cusco to lesser known ruins. Those were awesome with a tour guide but you have to speak Spanish. The English speaking tour guides are all hit or miss.