They may look simple, but imagine drawing them on a desert for 53 miles!

You need an aircraft just to figure out what they look like. How the Ancient Nazca people drew them with such precision is a mystery that will baffle us for ages.
Maybe your sims can solve the mystery scientists have struggled over for years. Your sims has been given a fully-furnished trailer to live in beside your choice of three Nazca lines to study: The spider; which is a starter home; the lizard; a slightly more expensive trailer; and the monkey.
Good luck with your investigation and have fun with these lots. I know they are not the most complex structures, but they are simple and comfortable until your sims gets the dough for a bigger home. Besides, #7 in my "8 Wonders for '08" is going to be THE most complex structure to date. So I decided to give myself a little breather with #6.