Lush, mountainous, and dotted with lakes and volcanoes, Guatemala can be somewhat challenging to traverse by land, though well worth the effort. Most visitors arrive to busy Guatemala City and head for colonial Antigua, where beautifully restored churches, plazas, and archways line the cobblestone streets. Ringed by three smoldering volcanoes, Antigua is a popular place for guided treks to see the fiery craters of Pacaya or Acatenango up close. Don't worry—your guides will send a scout ahead to make sure the volcano is "feeling friendly" on the day of your trek. As an ancestral and present-day homeland of the Maya, Guatemala's greatest archaeological treasures are UNESCO-listed Tikal National Park and the Maya ceremonial site of Yaxha. Taking a guided tour is a must (literally; the government requires it), so it's ideal to book in advance. The Maya Biosphere Reserve surrounding Tikal is home to jaguars, toucans, macaws, spider monkeys, howler monkeys, and quetzals—a bird sacred to the Maya people. If you can't make it to Tikal, the Copan Maya ruins are accessible from Guatemala City, located just over the Honduran border. Farther afield, scenic Lake Atitlán, surrounded by mountains, makes a perfect base from which to explore the highlands. From the friendly town of Panajachel, take a lake cruise to visit some of the smaller villages dotting the shores, such as Santiago de Atitlán, traditional home of the Tzutujil people. If time permits, catch the colorful market in nearby Chichicastenango, to which indigenous peoples from around the region flock to buy and sell their wares.