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Underwater Base

Want a base nobody can find? Build it underwater! This guide shows how to make a glass dome base on the ocean floor with glowstone lights inside. It takes a little planning (you'll need to keep the water out), but it's one of the coolest bases you can build.

Hard ~1.5 hours

What You'll Need

Glass Blocks

~64

Glowstone

~16

Doors

2

Sponges

~8

Ladders

~8

Wood Planks

~16

Step-by-Step

  1. Underwater Base — step 1: Build a glass dome on the seafloor
    1

    Build a glass dome on the seafloor

    Find a shallow spot of ocean. Place a door at the seafloor to make an air pocket, then build a hollow glass dome around it. Use sponges to soak up water inside the dome so you can breathe.

  2. Underwater Base — step 2: Add a door entrance & airlock
    2

    Add a door entrance & airlock

    Make a doorway with two doors and a ladder shaft going up to the surface — this acts as an airlock so water stays out. Line the entrance with planks so it's easy to spot from outside.

  3. Underwater Base — step 3: Light it up & furnish inside
    3

    Light it up & furnish inside

    Place glowstone around the dome so it glows through the glass and looks amazing at night. Add your bed, chests, and crafting table inside. You now have a secret underwater lair!

Pro tip: Always keep a door or trapdoor between you and the water — if a block breaks, the airlock stops your whole base from flooding.

Keep Building