Rajski vodoskoci

The novel focuses primarily on a project known as the Orbital Tower proposed by the main character, Vannevar Morgan. The tower is to stretch from the Earth's equator to a satellite that is in geostationary orbit. Such a structure would greatly reduce the cost of sending people and supplies into space.

The main story is framed by two other stories. The first one tells of King Kalidasa, living thousands of years before Morgan is born, who is constructing a 'pleasure garden' complete with functioning fountains, in a significant engineering effort for the time. The other story, taking place long after Morgan has died, deals with aliens making contact with Earth.

Due to many technical issues, there are only two locations on Earth where the Orbital Tower can be built. One is in the middle of the Pacific Ocean, and the other is Sri Kanda (a thinly veiled reference to Adam's Peak in Sri Lanka). However, there is a Buddhist temple on the island, and Mahanayake Thero, the head of the order, refuses to give permission to begin construction.

Hearing of the difficulties, a group of people living on Mars contacts Morgan and suggests that the tower be built there instead. It would be smaller than the one planned for Earth, and would reach from Mars to one of its moons, Deimos.

After a few setbacks, including some fatalities, construction of the tower gets underway. Although the engineer's heart is failing, he rides up the tower to take food and oxygen to a group of stranded students and their professor. After overcoming serious difficulties he succeeds, then dies of a heart attack on the way back down.