How the Pantheon, which was built over 2000 years ago, is still standing when buildings made 150 years ago are about to crumble.

Question

Edit- After reading most of the comments the general consensus is listed below:

1. The unique composite matrix of the concrete used gives it a self-healing property. When cracks form in the concrete, it will naturally seal them.
2. The Pantheon was a very significant structure which led to meticulous maintenance and restorations
3. The Romans didn’t have modern engineering. So they didn’t know exactly how strong they’d have to build the Pantheon to make it last. Their solution was to overbuild the hell out of it.
4. Survivorship bias. There were thousands of buildings constructed by the Romans but very few remain which are the ones we marvel at.

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In: 564

Answer 1

I love my home town of Asbury Park, NJ.

When I would look into the history of certain addresses it was hard to find what use to be there. Through lots of research I was able to find many hotels and apartments buildings that were really cool and historic looking. They all burnt down, sometimes blocks at a time. Almost all of them build in the 1800s and early 1900s.

Lots buildings burn down and fall, especially wood ones.
Then people will be like ,’ these new buildings stink , look at these amazing built house from 1905, they dont build houses like that anymore ‘. People dont realize there where crappy places from that era, but now they are gone.