Lopburi packs an extraordinary amount of history — Khmer, Ayutthaya-era and mid-century military — into a compact, walkable city, wrapped around a famous troop of monkeys. Add the Pa Sak dam and its cool-season sunflowers out in the province, and it rewards far more than the quick day trip most visitors give it.
The best of Lopburi
Phra Prang Sam Yot & the monkeys
Lopburi's signature sight — a Khmer-era three-tower (prang) shrine that has become the "monkey temple", home to the city's celebrated troop of crab-eating macaques. It sits opposite the railway station in the Old Town, alongside the San Phra Kan Kala shrine that the monkeys also colonise. Charming and chaotic in equal measure; watch your bags and glasses.
King Narai's Palace (Phra Narai Ratchaniwet)
The walled 1660s royal complex King Narai the Great built when he made Lopburi a second capital, now home to the Somdet Phra Narai National Museum. Its blend of Thai and European (French-influenced) architecture reflects Lopburi's brief moment at the centre of Ayutthaya-era diplomacy — the single most important historic site in the city.
Ban Wichayen & San Phra Kan
Ban Wichayen is the ruined residence of Constantine Phaulkon, the Greek adventurer who rose to be King Narai's chief minister and received French embassies here in the 1680s. Nearby, San Phra Kan (the Kala Shrine) is both a revered spirit shrine and a second monkey stronghold — a compact pairing of history and wildlife.
Prang Khaek & Wat Phra Si Rattana Mahathat
Prang Khaek is one of the oldest Khmer monuments in the city, and Wat Phra Si Rattana Mahathat, opposite the railway station, is a large ruined temple complex whose central prang and prayer hall show centuries of Khmer, Sukhothai and Ayutthaya influence — an atmospheric stop right in the Old Town.
Pa Sak Jolasid Dam & the sunflower fields
In Phatthana Nikhom district, the Pa Sak Jolasid Dam is Thailand's largest reservoir by surface area, famous for the cool-season State Railway train that runs across the dam wall. From November to January the surrounding hills fill with blooming sunflower fields (thung thantawan) — Lopburi's best-known seasonal draw and a genuine day trip from the city.
The Monkey Buffet & King Narai Reign festivals
Two festivals define Lopburi's calendar: the Monkey Buffet Festival each November, when the Old Town lays out a lavish spread of fruit and vegetables for the macaques at Phra Prang Sam Yot, and the King Narai Reign Fair each February, when the palace and Old Town come alive with period costume, light-and-sound shows and markets.
Things-to-do questions
What is Lopburi famous for?
Above all its monkeys — the crab-eating macaques of Phra Prang Sam Yot and San Phra Kan, celebrated with the November Monkey Buffet Festival — and King Narai the Great's 17th-century palace, which made Lopburi a second capital. It's also known as Thailand's army town and for the Pa Sak Jolasid dam and cool-season sunflower fields.
Is Lopburi worth visiting?
Yes — it's often done as a quick day trip from Bangkok or Ayutthaya, but the concentration of Khmer and Ayutthaya-era monuments in a compact, walkable Old Town, plus the monkeys, the dam and the sunflowers, rewards a proper visit and even an overnight stay.
When can you see the sunflowers near Lopburi?
The sunflower fields around Phatthana Nikhom and the Pa Sak dam typically bloom in the cool season, roughly November to January. Exact timing shifts year to year with the rains, so check current reports before travelling — and the seasonal dam-crossing train runs in the same window.
Are the Lopburi monkeys safe to be around?
They're wild macaques, so treat them with respect: don't carry visible food or drinks, secure bags, and keep hold of phones, glasses and hats. Most encounters around Phra Prang Sam Yot and San Phra Kan are fine if you're sensible, but they are bold and quick.
Sources & References
- Lopburi province — Wikipedia
- Phra Prang Sam Yot — Wikipedia
- Pa Sak Jolasid Dam — Wikipedia
- Tourism Authority of Thailand
Primary and official sources are cited above. Government rules, fees and procedures in Thailand change over time and vary by office; always confirm current requirements with the relevant authority before relying on them. BAANLYY never takes paid placement in editorial content.
Hero photo by Quang Nguyen Vinh on Pexels. Confirm opening hours and access, especially for the seasonal sunflowers and dam train, before travelling.
