Volcanoes

One of the most well known and accessible hikes, here you will climb the mountain opposite Volcan de Fuego and watch the eruptions throughout the night from a safe distance. 

Here you can stand on the rim of an active volcano and look into the crater as lava spews out before your eyes. It is only 15 minutes walk from the carpark, but the island is remote to get to. 

To get to Erta Ale, you require a tour guide with armed entourage because of terrorist insurgencies in the region. However, here you can stand at the edge of an active volcano with comparatively few tourists. 

Here is the only destination outside of Iceland where you can see blue lava. It is significantly more accessible and cheaper to get to, with 500-1000 people per night visiting the sight. It's a 2 hour hike.

This is the world's largest lava lake. Access is difficult and costly as you may need visas for DRC and Rwanda, as well as the climbing permit (USD$300)

Whilst not a volcano, this fiery gas crater - affectionately known as "The Gates of Hell" deserves an honourable mention on this page

With daily eruptions, Kīlauea attracts thousands of people each day and up to 2.5 million visitors per year. 

When volcanoes are erupting in Iceland, you can visit them via helicopter tour. Safety information changes frequently though. 

Given its location in Europe, this is a more accessible volcano where you can go to witness lava with regular eruptions every 20 minutes. 

Again located in Europe, this is an accessible and popular volcano to go visit for those eager to witness nature's power. Not all tours see lava though.