More to explore:
Old-fashioned soaking tub.
Bathroom Soaking Tub Design
Rancho Pacifico - Japanese soaking tub
Wow! DIY ofuro (Japanese soaking tub) with poured in place concrete! dscf0021 by splatgirl, via Flickr
Give me this tub
Glass shower and tub
walk through the shower to get to the tub? Bathroom tub ideas