I've spent a lot of time on the internet over the past 18 years, here are some websites and images I've come across.
This list is incomplete without a special reference to the Blue Sky City.
Notably, Build Canada.
Patrick Collison's examples of ambitious projects executed on quickly.
Make Something Wonderful, a collection from the life of Steve Jobs.
Bret Victor's talk on creating tools that empower people.
Frank Chimero's The Web's Grain.
Gwern Branwen's catalog of unheralded quality-of-life improvements.
Anything by pudding.cool, particularly Hello Stranger.
Design Arena, comparing AI design capabilities.
Radio.garden, let's you listen to the radio anywhere in the world.
Nielsen Norman Group's Flat Design - the usability tradeoffs of flat UI trends.
Book recommendations from Stripe.
Every issue of Stewart Brand's Whole Earth Catalog is available online to look at.
C.S. Lewis's The Inner Ring.
An archive of the 1964 New York World's Fair is available online.
The creators of Lean created mathlib, a collection of useful facts about mathematical objects.
Making Software by Dan Hollick.
The Coziest Place on the Moon.
Monoskop, a wiki for arts and studies.
The progress of responses from GPT models over time.
Richard Hamming on how to do great research.
A sudden Gust of Wind (after Hokusai), Jeff Wall, 1993