CONCEPTUAL ANALYSISCONCEPT: NautilusCONCEPT DEFINITION: The Nautilus is known as the living fossil due to the fact that it has remained largely unchanged for almost 400 million years. Found in abundance in prehistoric times, the nautilus numbers have dwindled and only a handful of its species remains today.Nautilus is the common name of marine creatures of cephalopod family Nautilidae, the sole extant family of the superfamily Nautilaceae and of its smaller but near equal suborder, Nautilina.SUPERORDINATE CONCEPT (SUBSUMER): Cephalopods, the class of millusks which scientists classify octopuses, squid, cuttlefish and nautiluses, can change color faster than a chameleon. They can also change texture and body shape, and, and if those camouflage techniques don't work, they can still "disappear" in a cloud of ink, which they use as a smoke-screen or decoy. The class Cephalopoda, which means "head foot", are mollusks and therefore related to bivalves (scallops, oysters, clams), gastropods (snails and slugs), scaphopoda (tusk shells), and polyplacophorans (chitons). Most mollusks are protected by a hard external shell and many of them are not very mobile. Nautiluses are the only extant cephalopods with an external shell.COORDINATES CONCEPTS:OctopusThe octopus is a cephalopod mollusc of the order Octopoda. Octopuses have two eyes and four pairs of arms, and like other cephalopods they are bilaterally symmetric. An octopus has a hard beak, with its mouth at the center point of the arms. Octopuses have no internal or external skeleton allowing them to squeeze through tight places. Octopuses are among the most intelligent and behaviorally flexible of all invertebrates. SquidSquid are cephalopods of the order Teuthida, which comprises around 300 species. Like all other cephalopods, squid have a distinct head, bilateral symmetry, a mantle, and arms. Squid, like cuttlefish, have eight arms arranged in pairs and two, usually longer, tentacles. Squid are strong swimmers and certain species can 'fly' for short distances out of the water.

CuttlefishCuttlefish are marine animals of the order Sepiida. They belong to the class Cephalopoda (which also includes squid, octopuses, and nautiluses). Despite their name, cuttlefish are not fish but molluscs. Cuttlefish have an internal shell (the cuttlebone), large W-shaped pupils, eight arms and two tentacles furnished with denticulated suckers, with which they secure their prey.

SUBORDINATES CONCEPT:Chambered NautilusThe Chambered Nautilus, Nautilus pompilius, is the best-known species of nautilus. The shell, when cut away reveals a lining of lustrous nacre and displays a nearly perfect equiangular spiral, alt hough it is not a golden spiral. The shell exhibits counter shading, being light on the bottom and dark on top. This is to help avoid predators because when seen from above, it blends in with the darkness of the sea, and when seen from below, it blends in with the light coming from above.

Bellybutton NautilusThe Bellybutton Nautilus (Nautilus macromphalus) is a species of nautilus native to the waters off New Caledonia, the Loyalty Islands, and north-eastern Australia. The shell of this species lacks a callus, leaving the umbilicus exposed, in which the inner coils of the shell are visible. This opening constitutes approximately 15% of the shell diameter at its widest point. The tentacles of this species are long and thin, having raised ridges which help provide grip when catching prey. N. macromphalus is the smallest species of nautilus.

DEVELOPMENT:One of main function of the proposed Angono Art Gallery and Museum Complex is to conserve/preserve Filipino Arts. This involves looking after artworks, repairing and restoring them as necessary. So, Nautilus is used as a concept for the proposed structure. The artworks and artefacts will serve as the living fossils that is preserved inside of a Nautilus shell which is the museum.Another function of the structure is to exhibit different artworks. Exhibition will be much more effective if there will be a smooth continuous movement inside the museum. This is obtainable with the form of a nautilus. It is spiral so there will be no corners that will interfere the sight of viewers and make their view seems to be endless that will give excitement. Use of stairs in between the tour in the galleries is removed because this will cause discontinuity instead we used sloped floors.