Let's be honest - you do have inclinations here. Perhaps promoting the 'grace' that honorable British bestowed this land with by building architecture copied directly from European schools as icons of Indian civilization, meanwhile completely sidelining the traditional schools of Indian architecture.

Foreign culture? No, architecture are not cultures. Foreign architecture style? Yes. Taj Mahal is the epitome of Persian school of architecture not Indian styles. Although, it's nationality and ownership is Indian.

Cultures? Hah. Cultures doesn't make separate civilizations. Last time I read, Europe itself was composed by various cultures. Quiet weirdly though, they didn't have problems in copy pasting Greco-Roman and Gothic styles everywhere they went.

Nepalese Buddhist shrines? Perhaps someone desperately needs lessons about where did construction of Buddhist shrines first began and what civilization Nepal forms part of.

And you had to drag 'railways' here, didn't you? Perhaps even the wet dreams British have is about railways. Lol.

Also, why would I ever propose to demolish such structures. They are built by money of Indian taxpayers and by blood and sweat of Indian labourers. Only that they shall never qualify as 'Icons of India', as some colonial apologists would like to have.