Bangkok. Ancient City.

When you visit the Ancient City in Bangkok, remember to rent a small electric car at the entrance. You just need to leave a passport as a deposit. The place is huge, so I don't recommend walking or cycling as it will be hot and tiring. There is a buffet restaurant inside. If you buy a ticket with a meal included, you can eat there. The food is average, but it will fill you up. I bought my ticket on Trip.com in advance, which was very convenient. You can see all kinds of buildings in the Ancient City, so if you like architecture, you should visit.