I use fence gates instead of doors because Zombies can't break them and Testificates can't open them : Minecraft
How to Make a Fence Gate in Minecraft (Updated 2019) | GamerShrewd
Fence Gate Recipe : Minecraft
You can make a wheelbarrow filled with cement using a cauldron a fence gate and ..., #cauldr... | Building a fence gate, Minecraft designs, Minecraft decorations
101 MINECRAFT BUILD HACKS - YouTube
Fence gates using sticky pistons - YouTube
Just realized you can use leads and fence posts to make ropes for a bridge : Minecraft | Minecraft construction, Minecraft blueprints, Minecraft architecture
DETAIL] Gates with fence height :) : Minecraft
How to Make Invisible Door in Minecraft Pc - Snapguide