Holy See (Vatican City) is approximately 0 sq km, while Belarus is approximately 207,600 sq km. Meanwhile, the population of Holy See (Vatican City) is ~1,000 people (9.5 million more people live in Belarus).
This to-scale map shows a size comparison of Holy See (Vatican City) compared to Belarus. For more details, see an in-depth comparison of Belarus vs. Holy See (Vatican City) using our country comparison tool.