Answered
What is Wireless Road in Bangkok?
Wireless Road, or Thanon Witthayu, is the embassy street running along the eastern edge of Lumphini Park in central Bangkok, and it holds the densest concentration of freehold branded residences in the city.

It takes its name from Thailand's first radio station, built here in 1913. The embassies of the United States, the Netherlands, Switzerland and Japan sit on it, which is why the street was never built out at Sukhumvit's density and why its plots reach the market rarely.
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That scarcity is the whole investment case. No new land is created on Wireless Road; a plot may change hands once a decade. The corridor runs from Ploenchit at the north to Sathorn at the south, with the park along its western side.
Buildings on it include Upper House Residences, The Wireless Residences, 98 Wireless, EI8HTEEN SEVEN and ONE89 Wireless inside One Bangkok, and The Embassy Wireless. For what is available on the street today, ask Embark Estate; we reply within 4 hours on WhatsApp or LINE.
How we know this
Embark's own corridor record, maintained from land transactions and building filings.
