Begin your trip to Thailand in Bangkok with a visit to the Wat Phra Kaew and Grand Palace. A sacred site for Thai people and a major landmark of the city, this complex features intricately decorated temples and halls, including the famous Emerald Buddha Temple. Visitors are required to dress modestly, with no shorts or sleeveless tops allowed. Take your time to admire the stunning architecture and learn about the history and culture of Thailand. Some areas may be closed for renovation, so check the website before you go.
Take a day trip to Ayutthaya Historical Park, a UNESCO World Heritage Site and an ancient capital of the Kingdom of Siam. Here, you can explore the ruins and temples of the former city, including the iconic Wat Mahathat and its famous Buddha head wrapped in tree roots. The park is quite extensive, so consider renting a bike to cover more ground. Don't forget to try some local snacks and souvenirs from the markets nearby. Some temples may be closed on weekdays, so plan your visit accordingly.
If you have more time, consider visiting the famous Chatuchak Weekend Market in Bangkok or taking a boat tour of the Chao Phraya River. For a more cultural experience, catch a traditional Thai dance or muay thai fight at an entertainment venue. If you have less time, skip Ayutthaya and explore the many other temples and museums in Bangkok, such as Wat Arun or the Jim Thompson House Museum.