Round Building Covered With a Dome
This page is the CodyCross answer for the clue below from Train Travel, Group 705, Puzzle 3 (Ear Popping Tunnels).
Question is: Round Building Covered With a Dome
and the answer is: ROTUNDA
Word Meaning:
ROTUNDA — (architecture) A round building, usually small, often with a dome.
Definitions from Wiktionary.