Short answers, pulled from the story.
King Jayavarman VII established Angkor Thom as the final capital of the Khmer Empire. An inscription found within the city refers to Jayavarman as a groom and the city as his bride, framing their relationship in intimate terms.
The last temple constructed in Angkor Thom was Mangalartha, which was dedicated on the 2nd of May 1295. After this date, any new creations were made of perishable materials and have not survived.
The city lies on the west bank of the Siem Reap River, situated about 1 kilometer from the river itself. Walls measuring 8 meters high enclose an area of 9 square kilometers, flanked by a moat that stretches for 3.6 kilometers.
The Ayutthaya Kingdom led by King Borommarachathirat II sacked Angkor Thom, forcing the Khmers under Ponhea Yat to relocate their capital southeast to Phnom Penh. The city was abandoned sometime prior to 1609 when an early western visitor wrote of an uninhabited place described as fantastic as Atlantis.
Roundels on pilasters at Ta Prohm depict common animals such as pigs, monkeys, water buffaloes, roosters, and snakes without any mythological figures. One can reasonably conclude these figures represent animals commonly seen by ancient Khmer people during the twelfth century.