1. Cusco City Tour: A Cusco city tour is a great introduction to the rich history and architecture of the city. It typically includes visits to iconic sites such as the Plaza de Armas, the Cathedral, the Qorikancha (Temple of the Sun), and nearby Inca ruins like Sacsayhuaman, Qenko, and Tambomachay.

2. Sacred Valley Tour: This tour takes you through the picturesque Sacred Valley of the Incas. You’ll visit the colorful Pisac Market, explore the impressive Pisac archaeological site, and continue to Ollantaytambo, known for its well-preserved Inca fortress and charming village.

3. Maras and Moray Tour: Maras is famous for its salt mines, which have been in operation since Inca times. Moray features striking concentric agricultural terraces that were used for agricultural experimentation. This tour combines both attractions and offers insights into ancient agricultural practices.

4. South Valley Tour: For a less touristy experience, consider a tour of the South Valley. You’ll visit sites like Tipon, known for its Inca irrigation system, and the pre-Inca ruins of Pikillacta. This tour provides a glimpse into lesser-explored historical sites.

5. Rainbow Mountain Tour: One of the most popular day tours from Cusco, this adventure takes you to Vinicunca, the stunning Rainbow Mountain. You’ll hike through breathtaking landscapes to reach the colorful mountain, known for its vibrant mineral deposits.

6. Humantay Lake Tour: A relatively short hike leads you to the dazzling turquoise waters of Humantay Lake, nestled amid snow-capped peaks in the Andes. It’s a visually stunning and rewarding excursion for nature lovers.

7. Machu Picchu Day Trip: Although Machu Picchu is typically visited over a couple of days, it’s possible to do a day trip from Cusco. You’ll take a train to Aguas Calientes and then a bus to the famous archaeological site. This option allows you to see Machu Picchu in a single day, but it’s a long and intense journey.

When booking Cusco day tours, it’s essential to choose reputable tour operators who prioritize safety and sustainability. Additionally, keep in mind the altitude in Cusco, which is over 3,000 meters (10,000 feet) above sea level. Acclimatization is crucial, especially if you plan to visit high-altitude sites.