Like Bay City (my home away from home on the Grid, about which I'll write soon!), Nautilus properties are double prim. If you can afford the prices and decide to build here, make sure to visit The Market (photo below), where you can pick up textures and entire houses to fit in with the theme. Step inside the large, open air building to find these free items, tucked into crates and large jars.
Small details are often the most interesting part of investigating new places. The photo below highlights some details of Nautilus City - the bright blue wall covering in one room of the empty palace, a face that looks out over the great chamber in the temple of the Citadel, and bright red jars decorated with a familiar figure, complete with proudly-displayed prim and bejeweled codpiece. A few of those red jars contain free houses, but some are simply the jars themselves, in case one wants a souvenir of Philip to take home.
Sometimes, don'tcha know, a jar is just a jar.