30 beautiful photos show the fall foliage this autumn

• It’s autumn, the season of falling leaves.
• In the Northern Hemisphere, fall began on September 23, and lasts until December 21.
• Visit Insider.com for more stories.

Fall is in full sway.

It’s the season of melancholy, cooling temperatures, and falling leaves. In the Northern Hemisphere, it began on September 23 and will go until December 21.

Halloween, pumpkin lattes, crunching through leaves. It’s a good time.

Here’s what the season looks like across the Northern Hemisphere.

In Tacoma, Washington, pedestrians walk under trees changing colors, as autumn takes a firm hold.

Leaves usually appear green because of the chlorophyll inside them. But in the fall, that compound breaks down, revealing the yellow and orange carotenoids within before the leaves tumble to the ground.

Source: Popular Science

Following a period of rain earlier in the week, the sun came out for a full display of fall colors.

On a rainy day in New York, a flaming red leaf lies on the windshield of a car. Red leaves get their hue from the compounds known as anthocyanins.

Source: Popular Science

In Philadelphia, one can make out the Benjamin Franklin Bridge through changing foliage. The peak time to see fall colors in the northern US this year is early- to mid- October.

Source: Smoky Mountains National Park's Fall Foliage Map

Elsewhere in the city, Pumpkins decorate the streets — Halloween approaches.

A hiker, framed by flaming leaves, walks in the Zillertal Alps in Austria.

Two women pose in a park under a tree in Prague. The woman's red dress almost matches the leaves above them.

A fisherman rows his boat in the Sylvenstein barrier lake, in Germany. The shore is covered in trees changing colors.

In Berlin, the edge of Tiergarten park is lined with ombre trees.

Pedestrians can barely be seen through thick yellow leaves, as they cross a bridge over the Spree river.

A woman walks under trees over leaves earlier this month in Moscow.

Another woman is caught in a tree that's almost as bright as her umbrella.

A worker cleans a path through thick leaves for walkers in Moscow.

In Saint Petersburg, the trees look more yellow than red.

Fallen leaves float in a park outside St. Petersburg.

So many leaves fell that a man had to wipe them from his windshield.

People took in the view of a colorful forest from cable cars at the Rosa Khutor Ski Resort.

In northern France, maple leaves color the countryside.

The red maple leaves are striking in front of green trees.

A cow enjoys the view of changing leaves in a valley in Switzerland.

In Warsaw, Poland, fog gives the autumn trees a gloomy feel.

Similarly, in Sarajevo, a man walks along a path between trees, over fallen leaves.

In Stuttgart, a squirrel climbs along a branch laden with yellow leaves.

In Germany, a deer squats in fallen leaves.

A chestnut lies in the sunshine in Bavaria.

In Turkey's Kutayha province, the road weaves through a forest slowly changing color. Forests cover more than half of the province.

Elsewhere in Turkey, an area locals call the "heart of the nature" turns yellow.

In Belarus, yellowing leaves turn a spotty red before they fall from branches.

A single leaf falls in Belarus. Autumn continues until mid-December.