If you are looking for a "map mod" to show your surroundings in-game, these are the top choices:

For Minecraft 1.8 , you can either download (adventure, survival, or parkour worlds) or install minimap mods to help with navigation. Below are the most popular options and a guide on how to install them. Popular Maps for Version 1.8

: One of the most famous adventure maps, featuring custom mobs, boss fights, and a scripted story.