As measured by the weather stations on the U.S. Viking probe landers, Mars's pressure varied between .006 and .015 of Earth's. Even if protected by a pressure suit, a tourist on Mars would have to contend with other strange inconveniences. Imagine our tourist trying to boil water over a campfire. Mars's air contains virtually no oxygen at all, and oxygen is necessary for fires. Even a suitably protected and supplied tourist would find Mars's weather to be a little tough.
Martian temperatures are brutally cold, as a rule.
Even when no sandstorm is in progress, there is enough red Martian dust in the air to turn the sky pink in the daytime. Despite the hardships it would pose to humans, Mars would be a fascinating place to visit. Ancient Craters Vast areas of Mars, especially in the southern hemisphere, are saturated with bowl-shaped craters , most of which were blasted out when the planet was bombarded by chunks of interplanetary debris billions of years ago. While some areas of Mars have been changed very little since those early days of bombardment, there are areas that have experienced some striking geological activity since then. To put its height in perspective, note that the top of Mt. Everest is only about 9 kilometers above sea level.