A substantial building is now referred to as a heroon. A heroon (plural heroa, also called a heroum) was a shrine dedicated to an ancient Greek or Roman hero and was used for the commemoration or worship of the hero. It was often erected over his supposed tomb or cenotaph.
Any building that wishes to survive a substantial earthquake should be able to flex. Construction companies know how to make a building better withstand the effects of earthquakes by making them more flexible.
Any building that wish to survive a substantial earthquake should be able to sway. Most buildings in Japan are constructed with isolation bearings, that allow the buildings to sway from side to side during an earthquake.
The original building on the site was built for the Duke of Buckingham and he named it Buckingham House. When it was bought for the monarch, it had substantial additions made to the building and it was renamed Buckingham Palace.
Unless the top building is sufficiently high enough to lower the force of gravity by a substantial amount, you would weigh the same standing on top of a building as you would standing on any other non-accelerating (relative to the Earth) surface.
more substantial, most substantial
I was hoping for a substantial answer.
There was a substantial rise in our profit this year. This will be a substantial addition to your collection. Everyone thought the ship was substantial, but it later sank in a storm.
substantial
You don't need a substantial answer to this question.
98 pecent is a substantial amount
Large
I have a rather substantial vocabulary with which to write example sentences. The substantial weight of the load shifted when the truck made a quick turn.