1. Presumably you have submitted to Google manually using:
2. There is a link to your site that Google is aware of:
3. There is some indexable content within your site
4. Google has no problems with any TLD, and that includes .biz. Google
will index them all, and rank them all equally
5. You do not have any robots.txt of robots META tag telling Google
not to index your site
6. AlltheWeb has indexed your site
I can see no techinical reason for not being indexed by Google.
Your site is great looking. I found it a little difficult to navigate,
but that's okay, museums are for meandering. Your site is very visual.
However, Google likes text. Google loves text. Without text content
Google cannot function. Your home page and then lobby.html, when you
exclude links, contain a total text content of one word "lobby".
Googlebot may well have wrongly guessed that your entire site will be
similar and there is no point indexing it. Or it may have looked
deeper and decided the ratio of words to pages (ignoring text within
links) does not warrant indexing. Google has never published any
mention of not indexing sites like yours, this is pure speculation.
But they do say:
Reasons your site may not be included:
You employ doorway pages. Google does not encourage the use of doorway
pages. We want to point users to content pages, not to doorways or
Design and Content Guidelines:
Create a useful, information-rich site and write pages that clearly
and accurately describe your content.
Get some text in the home page. Because it is a "splash" page, Google
may have decided to ignore your site. Add text throughout - short
paragraphs wherever possible. Google would love this page (although I
cannot find how to get to it via the homepage):
From purely a search engine point of view, I would combine the
information on the following page with some explanatory paragraphs,
and make it your home page:
Submit your site to the appropriate directory within Open Directory:
I would go for the following category, however it is worth browsing to
see if a more appropriate category exists. The higher up the
hierarchy, the better your site will rank on Google:
Open Directory editors don't want to work too hard to decide on a
submission. So when they visit your homepage, make it easy for them to
determine the content contained within it.
When you are listed at Open Directory, and if you put some text into
your homepage, I would expect your site to be indexed. I don't KNOW
this for sure, such is the nature of search engine optimization - but
there will be no reasons left for Google to not index your site.