gardens by the bay is one. Singapore zoo technically counts too (local residents can get the free Wildpass program, which offers discounts.

https://www.gardensbythebay.com.sg/e...ower-dome.html

https://www.mandai.com/en/singapore-...our-visit.html.

doesn't bother me. Many countries have the inverse too (tourists have special rates, cheaper than locals: see Japan JR pass/Tokyo subway day pass, HK MTR tourist day pass - does OP complain about those and avoid them too?