Mount Washington isn’t the most impressively tall, memorable, or beautiful peaks in America, but it is one of the most dangerous. Located in the White Mountain National Forest in New Hampshire, the mountain’s height relative to its location makes it one of the windiest places on Earth. You likely will be barred from visiting in the winter, because temperatures regularly drop below -30° Fahrenheit, and the wind speeds clock in at over 200 mph. However, the warmth of the summertime causes the weather to be much less dangerous, so you should think about visiting in July or August.
You’re going to have to be joined by an experienced guide when visiting the Sunabung volcano in Sumatra, Indonesia. This active volcano has a history of taking the lives of unsuspecting foreign tourists that are just trying to sneak a peek into this vat of bubbling rock. This volcano hasn’t had a full-blown eruption in around 20 years, but the magma beneath burps up hundreds of pounds of volcanic ash and carbon dioxide. Oh, by the way, this volcano’s ash contains microscopic glass particles that will, quite literally, pop your lungs like balloons. You should probably avoid this place, but if you really want to look inside a volcano, don’t do it for too long.