Tubs were used during early times especially in cold areas where hot water can then poured to make the water lukewarm and bearable. Roman emperors luxuriate in the bathtubs which bear that name. Today, there are a variety of designs for bathtubs to suit any individual preference although sizes tend to be more or less the same. Shape of a bathtub is important too when contemplating to buy one and have it installed. A bathtub should primarily offer comfort to the bather and have good aesthetics too. It must match colors of the bathroom to have good design unity; it can be stand-alone.

http://www.vintagetub.com/asp/clawfoot_tubs.asp?AID=10306919&PID=746431&SID=wk-br-CT
This site offers classic design bathtubs for those nostalgic of olden times. They have on offer tubs made from lightweight but durable materials such as acrylic. They are designed to fit any bathroom and accentuate its overall motif.

http://at-house.myshopify.com/collections/bathtub
A good source of high-quality bathtubs designed for the modern bathroom.

http://www.china-angus.com
This is the website of China-based Angus brand of bathtubs located in Guangzhou.