After coming back from visits to foreign countries, King Rama V realised that Thailand needed tobe decentralized from Bangkok. He built Dusit Palace and increasingly constructed roads, namely Ratchawithi, Si Ayutthaya, Rama V and Sam Saen. Among all the roads he constructed, Tanon Ratchadamnoen was the widest and most beautiful Avenue in Bangkok where trees, Tamarindus indica and Mahogany were planted. Canals were dug and bridges were built to increase the convenience of transportation to the people