Operating from Tha Chang pier, there offers plenty of tours on offer. All of them include Wat Arun, the Royal Barge National Museum and a floating market. At weekdays it will pass by the "Thonburi Floating Market", which is set-up for tourists and not worth it. Better take the tour at weekends, when it goes by the Taling Chan Floating Market (which is also not authentic, but at least feels more genuine and is a lot more lively). The one-hour tour goes through the Bangkok Noi and Mon canals for 800 baht. The 90-minute tour also takes in the Bangkok Yai canal for 1,000 baht. The complete tour takes two hours, costs 1,200 baht, and goes deeper into Thonburi, where you'll visit an orchid farm.
วัดซางตาครู้ส
The Santa Cruz Church is an interesting Catholic church right at the banks of the Chao Phraya River. After the fall of Ayutthaya by a Burmese invasion, King Taksin commanded that the peoples who escaped had to settle down in Thonburi, the new capital of Siam. The King dictated that the Chinese group had to settle down around the area of Wat Kalayanamit, while the Portuguese people would have their houses built along the bank of the Chao Phraya River. The Portuguese had given military support to King Taksin to help him drive out the Burmese from Siam. In recognition of their support, King Taksin granted the Portuguese a plot of land for the building of a church. The first Santa Cruz Church was a wooden church built in 1770. When that church got into a state of decay, a new Chinese-style church was built here, as it was nearby the Chinese community that stayed at Wat Kalayanamit. That church was called "Kudichin church" (Chinese church), and the Portuguese who settled here were called "Farang Kudichin", which means "Westerners at the Chinese shrine". In 1916, the third and current Santa Cruz Church was built during the reign of King Rama IV. The church has a magnificent Italian-style architecture. The community around it still feels authentic, and is the birthplace of a famous kind of cupcake, the "Khanom Farang Kudichin".
วัดกัลยาณมิตรวรมหาวิหาร
Situated on the mouth of Bangkok Yai canal at the west bank of the Chao Phraya, this massive temple is popular among the Thai-Chinese community. It was founded in 1825 by a Chinese nobleman who donated his own residence and bought a piece of land to build a temple. This was during the reign of King Rama III, when trade with China was flourishing. The viharn is in a typical Thai style, but the two flanking buildings look Chinese. Inside the viharn is a large Buddha image named Phraputtatrirattananayok, which is 15.44 metres tall and 11.75 metres wide. It is so large that it almost entirely filled the interior of the hall. The image is called Sampokong by worshippers of Thai-Chinese descent. The inner courtyard is decorated with statues and gates imported from China. Every day during the Chinese New Year festival, this temple is crowded with thousands of Thai-Chinese visitors.
วัดประยุรวงศ์
This temple is close to the banks of the Chao Phraya River. The first thing you see is its large white chedi in Ayutthayan style; it is the only chedi of this style in Bangkok. King Rama II tried to create a similar chedi at the Golden Mount, but the ground could not support it and it collapsed. If you want a nice nightly picture of the chedi, walk on the Memorial Bridge at dusk when it is beautifully illuminated. However, most visitors come for the Khao Mor Cemetery, a large mound at the entrance of the temple. The mound is covered with many different shrines, chedis, spirit houses and even a doll house. There's a lot to take in, but it's certainly a fun walk. The shallow pool has some turtles swimming around, which you can feed with food bought from the stalls outside. Another attraction is the small two-room museum with Khon masks, papier-mache pigs and other cultural objects.
วัดระฆังโฆสิตารามวรมหาวิหาร
This temple was built during the Ayutthaya Period, later it was reconstructed and upgraded as a royal temple by King Taksin. The temple was named the "Temple of the Bells" due to the discovery of a huge bell at this temple in the reign of King Rama I. This significant temple was the residence of many supreme patriarchs of the Rattankosin Period, including Somdej Toah, a highly respected monk in the reign of King Rama V. Things of note are the beautiful mural paintings in the ordination hall, the image hall and the bell tower. Outside is a row of bells lined up. It is believed that ringing all of them in a row will bring good luck. The front of the building is right at the banks of the Chao Phraya River, and it is beautifully lit at nighttime.
วัดสุวรรณาราม
This is a big royal temple on the banks of the Bangkok Noi Canal. It was built during the reign of King Rama I and renovated during the reign of King Rama III. Inside are exceptional murals depicting the Jutaku, deities and the Buddha in subduing Mara posture. These works of art of the early Rattanakosin Period (early 19th century) are considered some of the best surviving mural paintings in Bangkok. One particularly interesting mural is a Dutch person holding a telescope. At that time, the Dutch were associated with modern inventions that were very popular in Siam.
พิพิธภัณฑ์เขตบางกอกน้อย
This museum is about the history of Bangkok Noi and of the village of "Bangkok" that used to be located here. Bangkok Noi was an important trading centre in the Ayutthaya Period, and briefly the capital of Siam in the Thonburi Period. The Rattanakosin Period has also been covered, when most of Bangkok Noi consisted of fruit orchards. Many people worked as craftsmen, including those making bronze bowls. These fruits and bowls are on display in the museum. Over time, Thonburi became more urbanised, but here you can still see what it used to be like.