A famously nocturnal city, the nightlife in Santiago often stays lively until the sun comes up. Locals may only go to dinner at 11pm, getting to nightclubs after 1am and staying until dawn. While some visitors may not have that sort of stamina, they shouldn't be surprised to find that clubs in Santiago often don't fill until midnight.
Much of Santiago's nightlife caters to people between 18 and 35, and live music is popular, spanning a wide range of musical styles from electronic to rock and jazz. Internationally-renowned bands and musicians play at venues like the Estado Nacional Julio Martinez Pradanos (the national stadium) and the Espacio Riesco. Pio Nono has the highest density of bars in Santiago, and there are a number of high-end nightclubs surrounding the Plaza San Enrique. The Bellavista neighbourhood has a large number of nightclubs and bars, many of which stay open until as late as 5am, as well as a few relaxed venues with local music like tango, bolero and Latin jazz. Avenida Suecia, in the generally upmarket Providencia neighbourhood, was once considered the nightlife centre of Santiago, especially for foreigners, but the road developed a reputation for seediness and debauchery and most of the best venues have since closed down.
The legal drinking age in Chile is 18 and the locals are generally very welcoming and friendly on a night out. The party tends to spill out into the streets in a festive manner, especially in Bellavista where the sidewalks are extensions of the various bars and restaurants.
There is a huge theatre community in Santiago, with offerings ranging from small independent productions to large-scale operas. Established theatres like the Teatro Bellavista, Teatro Alcalá, and Estación Mapocho stage productions on a regular basis, but performances in English are few and far between. Tourists who don't speak Spanish will enjoy symphonies or ballets at the Teatro Municipal, Teatro Oriente and Teatro Universidad de Chile.