Apparently it is possible to spawn inside an igloo in Minecraft 1.15 (Java for PC/Mac). We were pretty surprised that after trying this strange seed on both a Mac and on a PC that inside the igloo was the spawn point on each platform.
Snow Villages, Ice Spikes, Lonely Igloo and Lapis [1.14]
Minecraft Java Edition Seed (1.14 and higher) with a snow village at spawn, lapis under the village center, an ice spike biome, igloo, and second snow village! Between the two villages there’s a lot of new 1.14 building and crafting tables to use.
Snowy Winter Scene plus Igloo w/Basement for Java Edition
Quite the winter scene at spawn in this Minecraft Seed for Java Edition. Spawn biomes include snow plains, mountain and taiga. Igloo w/Basement, too! 1.13+
Igloo with Basement on Frozen River
In this Minecraft Java Edition seed you’ll spawn close enough to an igloo that you can see it. The igloo is the rarer variant that has a basement, too!
Igloo with Gold in Basement Chamber
This Minecraft Igloo seed includes a basement chamber that holds a golden apple, gold nuggets, and of course a zombie priestess and a regular priestess.
