Brunei Darussalam has some of the most impressive Islamic architecture I've perhaps ever seen. There's also a swathe of natural environment (thanks to its location in Borneo) that is well conserved and relatively easy to access, particularly if you have time and are willing to move beyond the capital. The rainforests that you'll find are old-growth, conserved thanks to the wealth generated by oil - there's been no need to create palm-oil. I stuck to the capital due to time restrictions but would like to return to visit the natural beauty beyond city limits. The tiny Sultanate sparked international controversy in 2019, though, through the implementation of the final stage of Sharia Law. What this means for tourism, no-one yet knows. Tread carefully, particularly if you are a gay male - the death penalty by means of stoning now applies for homosexual acts. The same applies to acts of adultery, for heterosexuals. If you are caught stealing, punishment by limb amputation is also now permitted. Do your research and ensure you can maintain personal safety during your visit. Although brief, I hope this overview of Brunei Darussalam has given you some of idea of what you can expect if you decide to visit.