Kalyanotsavam or marriage festival is celebrated in the Kalyana Mandapam. The Kalyana Mandapam is architecturally similar to the Tirumala Raya Mandapam. At its western end, is a small mandapam carried on slender cut-stone pillars and surmounted by a vimana. This mandapam is regularly used for conducting daily Kalyanotsavams and comprises of richly decorated pillars, architecture of the Chola and he Vijayanagara periods.
This Mandapam is believed to be built in later Vijayanagara times (early half of the 16th century). This Mandapam is full of exquisitely beautiful pictures of the Vijayanagara period like, Rama breaking the bow, Rama Pattabhishekam and Krishna Leela.
And also check –Tirumala Raya Mandapam