CTF-Face

This is probably the most famous CTF map in Unreal Tournament. It spawned numerous remakes, including CTF-Face-SE and the more techy CTF-FaceII for Unreal Tournament, the neo-egyptian-themed CTF-Face3 for UT2003 and the return of the original CTF-FaceClassic for UT2004. Facing Worlds inspired other two-tower CTF maps in space and also was converted to a Jailbreak map.

Trivia

 * CTF-Face was inspired by a community map for Unreal, which consisted of 2 bases (with small towers) linked by a bridge. The author, however, chose to make the towers taller to make sniping a major element in the map. (source)