HELSINKI, Finland takes its network of underground bunkers seriously and offers protection from radiation and toxic chemicals.

The civil shelter in Helsinki can hold up to 6,000 people. It is bright, clean and warm, complete with a soccer pitch, children's playground, cafeteria and car park.

A vast network of underground facilities have been built since the 1980s as a result of the thousands of similar bunkers across the city.

Although they are usually used for parking, storage, sporting events and more, their true purpose is more ominous: they are designed to protect those in Finland from an attack.

This civil shelter in Finland is capable of having 6000 people, but the country has a vast network of underground facilities built since the 1980s.

When designing the shelters, all types of weapons were taken into account, according to Tomi Rask, a teacher at the city rescue department.

He said blast proof, gas proof, radiation and toxic chemicals.

Defense shelters need to be ready for use within 72 hours.

Some structures need to be taken away because we need to make room for people who are coming into the shelters.

It's not that we need to empty the shelter before we can take people in, it's that we need to have some form of equipment.

A floorball court in one of Finland’s civil shelters. In normal times, this underground network is used for several purposes: parking, storage, cultural and sporting events, for example.

The playground is important for children to let off steam and for parents to take a break.

These civil shelters might be the one thing that we could give to NATO.

His comments come as the country prepares to apply to join the military alliance.

President Sauli Niinisto said on Sunday that being a member of NATO will give his country's security a boost.

The invasion of Ukraine by Russia has changed the security situation in the country, according to Niinisto.

As the Nordic nation shares a border with Russia, it wants to be prepared for the worst.

We have neighbors. The neighbors might cause us some immediate danger.