I highly recommend Peru to vacationers if you’re willing to fly domestically. Longer-term travelers can easily spend a month or two exploring.
When we crossed from Colombia, we immediately noticed we were deep in the Andes. Andrea and I found that we suddenly towered above most people in the immigration line, but quickly realized our height was no advantage when it came to tackling hills and mountains at altitude. We constantly reveled in seeing lamas and alpacas walking the streets and had our breath taken away by the stark mountain views.