Cusco

May through October — the dry season — is the clear recommendation. Skies are reliably blue, temperatures pleasant at 18–20°C in the day (dropping to 5–8°C at night), and the Inca Trail is open and safe. June through August is the most visited period; May and September/October have similar weather with smaller crowds. The rainy season (November–April) closes the Inca Trail and makes some mountain trails difficult, but Machu Picchu is accessible year-round.

Altitude sickness (soroche) is real at Cusco's 3,400m elevation. Symptoms: headache, fatigue, shortness of breath, nausea, poor sleep. The fix: arrive and rest for 24 hours before any physical exertion. Drink plenty of water. Eat light. Coca tea (mate de coca) is widely available and genuinely helps. Most hotels offer it on arrival. Avoid alcohol the first day. If symptoms are severe, see a doctor — pharmacies sell acetazolamide (Diamox) over the counter, which some travelers take prophylactically (ask your doctor first).

Yes — Machu Picchu has limited daily entry tickets that sell out, especially June–August. Book at least 1–3 months ahead at the official site (machupicchu.gob.pe). Tickets are sold by circuit (1–4) and time slot. Circuit 1 is the classic photo points; Circuit 2 is the longer walk through more ruins. Huayna Picchu and Machu Picchu Mountain hikes require separate, additional tickets (even harder to get — book 4–6 months ahead). The Inca Trail requires separate permits that sell out months in advance.

No road goes to Machu Picchu — all access is by train or on foot. The standard route: take the PeruRail or Inca Rail train from Cusco or Ollantaytambo to Aguas Calientes (1.5–4 hours depending on departure station). From Aguas Calientes, buses run up to Machu Picchu ruins every 15–30 minutes (20-minute ride, $24 USD round trip). Alternatively, hike up from Aguas Calientes (1.5–2 hours, 1,700 steps). The Inca Trail is the classic 4-day hike arriving via the Sun Gate — permits required far in advance.

The Cusco Tourist Ticket (Boleto Turístico) costs approximately $43 USD and covers 16 sites including Sacsayhuamán, Qenqo, Puca Pucara, Pisac ruins, Ollantaytambo, Chinchero, and several Cusco museums. It's valid for 10 days and mandatory for accessing those sites. Note: Qorikancha and the Cathedral have separate entry fees. Machu Picchu requires a completely separate ticket. The Boleto is sold at Cusco's COSITUC office on Calle Garcilaso.

The Andean food culture is one of Peru's greatest assets. *Cuy* (guinea pig, roasted or fried) is the traditional protein — try it at least once, ideally at a local restaurant in San Blas. *Alpaca* steak is more accessible and excellent. *Causa* (potato terrine), *chupe de camarones* (shrimp chowder), *quinua sopa*, and *rocoto relleno* (stuffed spicy pepper) are the regional highlights. For the best menú del día: any local restaurant around San Pedro market at lunch. For high-end Andean cuisine: Central Restaurante or MAP Café (inside the Museo de Arte Precolombino).

The classic 4-day Inca Trail (45km) is genuinely one of the world's great hikes — cloud forest, Inca ruins along the route, and the Sun Gate sunrise arrival at Machu Picchu make it special. Permits are strictly limited (500 people per day, including guides and porters) and sell out 6+ months ahead for the peak June–August season. Book through a licensed trekking agency. Alternatives for those who can't get permits: the Salkantay Trek (5 days, no permits needed, arguably more scenic), the Lares Trek, or the Quarry Trail.

The Sacred Valley of the Incas (Valle Sagrado) runs from Pisac to Ollantaytambo along the Urubamba River, approximately 60km northwest of Cusco. A full day covers Pisac ruins + market, Urubamba for lunch, and Ollantaytambo. Two days lets you add Chinchero, Moray (circular Inca agricultural terraces), and the Maras salt mines. The Valley sits about 300m lower than Cusco (less altitude, more comfortable for the first day after flying in). Many travelers spend 1–2 nights in Urubamba or Ollantaytambo as an acclimatization base.

Inca masonry (ashlar) is remarkable for its precision without mortar — large blocks of andesite or granite fitted together so tightly that a credit card can't slide between them, yet no binding agent was used. The technique is called polygonal ashlar, and it's what has allowed Inca walls to survive 500 years of earthquakes while the Spanish colonial constructions built on top have repeatedly cracked and required repair. The original builders used ramps, sleds, and human labor, but how they achieved such precision fit remains partly mysterious. The best examples: lower Qorikancha walls, Sacsayhuamán, and Ollantaytambo's Sun Temple.

There is no practical overland route for tourists — the road takes 20+ hours through harsh terrain. Fly: Lima to Cusco is 1 hour 10 minutes, with multiple daily flights on LATAM, Avianca, Sky Airline, and JetSMART. Fares range $80–250 USD depending on booking time; buy 2–4 weeks ahead for best prices. Flights from Lima depart from Jorge Chávez International Airport (LIM) and arrive at Alejandro Velasco Astete International Airport (CUZ), 5km from Cusco city center.

For fewer crowds at the main site: buy the earliest time slot (6 AM) and arrive before most groups. For alternative hikes: Huayna Picchu mountain (within Machu Picchu site, additional ticket, dramatic narrow ridge, requires good fitness), Machu Picchu Mountain (opposite side, larger, better panoramic view of the whole site). For a completely different Inca site: Choquequirao (2–4 day trek from Cusco, almost no tourists, comparable complexity to Machu Picchu, requires good physical condition). Rainbow Mountain (Vinicunca) is a popular day trip for dramatic Andean scenery.

*Chicha de jora* is the traditional Andean fermented corn beer — mildly alcoholic (2–4%), slightly sour, cloudy, and served cold in large glasses. It's been brewed in the Andes for millennia and is still produced in Cusco's smaller restaurants and *chicherías* (chicha bars, identified by a red plastic bag or flower over the door). In tourist restaurants it's pasteurized and safe; traditional homemade chicha carries the same risks as any homemade fermented beverage — if in doubt, ask how it's made. *Chicha morada* (non-alcoholic purple corn drink) is universally safe and excellent.

Generally yes, with standard precautions. The main risks: petty theft in crowded markets and bus stations (watch bags carefully), scams from fake tour operators (book through your hotel or established agencies), and altitude sickness (manageable with preparation). Violent crime against tourists is rare. The tourist police (Policía de Turismo) are present and accessible in the city center. At night, take taxis rather than walking in quieter streets. Don't accept unofficial guides who approach you on the street.

Plenty. Cusco is one of the most historically layered cities in the Americas. Beyond trekking: the Cusco Cathedral interior (a 100-year construction starting 1560, with 400+ colonial-era paintings), the Museo de Arte Precolombino in a colonial mansion housing pre-Inca art, the Qorikancha with its layered Inca-Spanish archaeology, a morning at Mercado de San Pedro, afternoon wandering in San Blas, and evening at a *peña* (traditional music and dance show). The Museo Inca at the Universidad de San Antonio Abad is excellent for understanding the timeline.

For luxury: Belmond Monasterio (a converted 16th-century monastery with pressurized rooms for altitude — no joke, it actually helps), Palacio del Inka, and Inkaterra La Casona in San Blas. For mid-range: Casa Andina Standard in San Blas, Tierra Viva Cusco. For budget: multiple guesthouses in San Pedro and around the Plaza. Tip: San Blas guesthouses have more character than city-center options and are only 10 minutes from the Plaza on foot (uphill; taxi back).

Cold enough to matter. Even in the dry season, nights drop to 3–8°C (37–46°F). In winter (June–August), overnight temps can go below 0°C at higher altitudes around Cusco. The city itself rarely freezes, but a proper warm layer (a down jacket or wool sweater) is essential for nights out. Days are pleasant at 18–22°C in dry season. Altitude keeps temperatures moderate even in the warmest months — you won't experience tropical heat here.

Rainbow Mountain (Montaña de Siete Colores) became a tourist phenomenon around 2016 when satellite imaging revealed the multicolored mineral striations after snow coverage decreased. The colors are real and extraordinary — red, yellow, green, and purple bands of geological strata. The trade-off: it's a full-day trip from Cusco with a challenging 5km hike at 5,200m altitude. If you're not acclimatized, it's genuinely difficult. Go on day 3 or 4 of your Cusco stay, not on arrival. The early-morning starts (4 AM from Cusco) are standard — worth it to beat the crowds.

Cusco is the Inca capital — a functioning city of 450,000 people where Inca and Spanish colonial history coexist in the streets, walls, and foundations of everything. It's where to understand the empire's scale and sophistication. Machu Picchu is the estate the Incas built for Pachacuti (the emperor who expanded the empire most dramatically) around 1450 — never conquered by the Spanish, abandoned, and rediscovered by Hiram Bingham in 1911. They're completely different experiences: Cusco is a living city with historical layers; Machu Picchu is an abandoned royal estate in a cloud forest setting that leaves virtually everyone silent on first sight.