The construction of Põltsamaa Castle was started in 1272. Between 1570 and 1578 it was the residence of Livonia's King Magnus. Repeatedly pillages, the castle was rebuilt by Woldemar Johann von Lauw in 1770 as a grand rococo-style palace. The castle, and the church built into its cannon tower, burnt down in 1941.
Põltsamaa St. Nicholas' Church was built from 1632 to 1633 on the site of earlier buildings. The nave was built on the 13th century gate buildings and the sanctuary on the 15th century cannon tower. The church was restored by 1952, and the castle ruins came under preservation during the 1970s.
Today the round courtyard holds a tourist information point and several museums including Põltsamaa Museum and a wine cellar with a food museum. There are also an art gallery, restaurant, handicraft and other workshops.
Built around AD 90 to entertain the legionaries stationed at the fort of Caerleon (Isca), the impressive amphitheatre was the Roman equivalent of today’s multiplex cinema. Wooden benches provided seating for up to 6,000 spectators, who would gather to watch bloodthirsty displays featuring gladiatorial combat and exotic wild animals.
Long after the Romans left, the amphitheatre took on a new life in Arthurian legend. Geoffrey of Monmouth, the somewhat imaginative 12th-century scholar, wrote in his History of the Kings of Britain that Arthur was crowned in Caerleon and that the ruined amphitheatre was actually the remains of King Arthur’s Round Table.
Today it is the most complete Roman amphitheatre in Britain.