.htaccess

<IfModule mod_rewrite.c>
  RewriteEngine on

  # See https://httpd.apache.org/docs/2.4/rewrite/remapping.html
  RewriteRule "^/cypherpunks$" "events/2013/cypherpunks" [R]
  RewriteRule "^/campusparty$" "events/2014/campusparty" [R]
  RewriteRule "^/cryptorave$"  "events/2014/cryptorave"  [R]
  RewriteRule "^/fisl$"        "events/2015/fisl"        [R]
</IfModule>