I built it because I could never find a map app for planning a trip the way I see it. Most of them either look like they were built in 1990 or are littered with useless false positives.

So I made London Tourist Map — a free web app with no signup and nothing to install. It puts 400+ London places and 17 day trips on one interactive map, including 38 hand-picked hidden gems. This is how it works under the hood, in plain terms.

What it had to answer

When you're actually in London with half a day free, the useful questions are boring and practical:

Is it open right now , and until when?

How much is a ticket — or is it free?

How long does a typical visit take?

Which station is nearest, and how many minutes is the walk?

Every place card tries to answer those.…