Hidden Sea Caves near the Lighthouse Stacks are normally inaccessible, but players discovered a specific glitched spot in the Standing Vice Point building that lets you fly a helicopter through it and reach them.
Source: Lighthouse Stacks — CC BY-SA
The Lighthouse Stacks themselves — the landmark hiding the secret sea caves behind it.
Helicopter clipped inside Standing Vice Point — the glitch spot that breaks you through to the hidden caves.
GTA Vice City's most famous UFO mystery took 10 years to solve
GTA: Vice City
The giant shark myth that haunted Vice City for decades
GTA: Vice City
This butcher shop's name is a triple-layered horror reference hiding in plain sight.
GTA: Vice City
A real 1930s kidnapping murderer is hiding on the wall of this mafia restaurant.
GTA: Vice City