Bull Island is man-made - well, formed as the result of sand building up against the (man-made) harbour wall. A stunning long sandy beach with an important bird sanctuary at one end, and a quaint wooden bridge, harbour wall, and monument at the other. If you aim for the middle section, you'll avoid the boy racers (they're not intimidating - just a bit annoying). On a windy day you'll have some impressive kitesurfing to watch, too.
Look out for the Bull Island if you come in on the plane. The northern approach often takes you directly overhead.
Bus routes 103, 104 and 130 run next to Bull Island (ask the driver), or Clontarf Rd DART (suburban rail) station followed by a 20 minute walk along the sea wall
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