The Sydney Opera House is a multi-venue performing arts center located in Sydney, Australia. It is considered to be one of the most distinctive and famous buildings of the 20th century, and it is a UNESCO World Heritage Site.

The Opera House was designed by Danish architect Jørn Utzon and was officially opened on October 20, 1973. The building's design is characterized by its distinctive white sails, which are made of pre-cast concrete and covered with more than one million white tiles imported from Sweden. The building sits on Bennelong Point, a promontory on the south side of the Sydney Harbour, and it overlooks the Sydney Harbour Bridge.

The Sydney Opera House hosts a wide variety of events, including music, dance, theater, and opera performances. It has multiple venues, the largest of which is the Concert Hall, which can seat up to 2,679 people. The Opera House also has a smaller venue, the Joan Sutherland Theatre, which can seat up to 1,507 people.

In addition to its performing arts spaces, the Opera House also features a range of restaurants, bars, and shops. Visitors can take guided tours of the building, and there are also regular events and activities held throughout the year. The Opera House is also a popular destination for visitors to Sydney, with its iconic architecture and stunning waterfront location making it a must-see attraction.