Outdoor amphitheatres are open-air venues designed for performances, concerts, and events. They typically feature a circular or oval shape, allowing for natural acoustics and visibility from various angles. These structures often have tiered seating, which helps accommodate large audiences while providing a clear view of the stage. Many outdoor amphitheatres are located in scenic environments, enhancing the experience for attendees. They can host a variety of events, including plays, music festivals, and community gatherings. Famous examples include the Hollywood Bowl in California and the Greece's Epidaurus Theatre, known for their historical significance and architectural beauty.