The shrine is roofed by a pyramidal tower composed of a series of similar but diminishing tiers, each of them a compressed version of the exterior pattern of the main shrine volume.
Noguchi's "Challenger 7 Memorial," installed in the Noguchi-Sadao-designed Bayfront Park in Miami, is a 100-foot-high tetrahelix, a spiraling tower composed of 31 tetrahedrons joined to one another in the twisting helical pattern of DNA genetic material (as discovered by J. D. Watson and Francis Crick in 1953).
It is a "lightweight transparent tower, composed of a 'cloud' of inflatable, light-emitting spheres... fed by real time information from all over the world".
At 978 feet, 4WTC is the seventh tallest building in New York, but unlike other recent skyscrapers – Renzo Piano's New York Times headquarters in Midtown, say, or the outrageous One57, a supertall condo for absentee billionaires – Fumihiko Maki's tower, composed of two blocks of broad dark glass, withdraws into the sky and almost disappears on sunny days.
Only five of the original nine towers still stand at the summit; although they follow the basic pattern of the Khmer roof tower composed of diminishing imitative stories, the contour of the towers is not rectilinear but curved, so as to suggest that the stories grow one out of another like a sprouting shoot.
JEAN TINGUELY'S "Homage to New York" was billed as the ultimate homemade gadget -- a towering contraption composed of found junk, dismembered bicycles, dismantled musical instruments, glass bottles, a meteorological balloon and electric motors in questionable condition.
The new hybrid² tower is composed of a concrete tower containing prefabricated concrete quarter-circle elements, steel beams and a steel tube tower on the top.
Bmxhex (2010), a towering collage, is composed of two scenes––a redheaded half-figure standing on an abandoned mattress, and, grafted onto it, a quarreler sitting on a BMX, ready to take off.
The roof of the tower is composed of three diminishing, compressed stories, each marked by little pavilions on the faces above the main porticoes.
The time-telling system of Su Song's clock tower was composed of the day and night time-keeping wheel and the five-storey wooden pagoda.
