You spawn in a snow biome that is next to a jungle.
X: -200 / Y: 85 / Z: 280
A Jungle temple near the spawn. Just head in the F:1 direction, and you will stumble across it.
X: -120 / Y: 70 / Z: -50
A double ravine! Just a ravine but with another ravine right underneath it.
With ores and stuff.
X: 50 / Y: 60 / Z: 650
Also near the spawn, but in a defferent direction, there is a big desert. Sadly, there is no pyramid in here, but instead you got this... thing. haven't seen anything like that before.