It was a nice sunny day when we left our hotel in another part of Lima to visit the Huallamarca pyramid ruins in the San Isidro section of Lima. What an amazing thing to see. In the middle of a modern residential community sits a centuries-old adobe pyramid made by tribal people that predate the Inca. The contrast of modern and ancient is striking and pleasant. We took a bus from our part of town and got off on Avenue Javier Prado just a few blocks from the ruinas, called a "huaca". The entrance fee was only about the equivalent of $1.50 US. This gets you the guided tour of the pyramid, which included walking up the long ramp to the top and going into the museum. It was well worth the investment of time and money. It took years for the Lima culture, the tribe living in this area at the beginning of the Christian era, to build this adobe structure. As new cultures rose the site begin to take on different roles. It went from a place of worship to a place of burial several times. Be sure to visit the geocache by the same name. Huallamarca (GC249K8) is located just outside the grounds of the site. You don't have to pay an entrance fee to find the cache. Due to its location in an upscale residential community I recommend visiting during daylight hours. Be sure to check out the other Lima caches while you are here. Stealth is a must as most Peruvians have no idea what geocaching is!