More to explore:
Old-fashioned soaking tub.
Bathroom Soaking Tub Design
Soaking tub . . . shower with wooden floor
Soak up summer paradise in this island bathtub! #bathtub #oceanview #luxury
diy in situ concrete ofuro (japanese soaking tub)
Wow! DIY ofuro (Japanese soaking tub) with poured in place concrete! dscf0021 by splatgirl, via Flickr