There are over 800 photos of the Cheltenham Badlands on Flickr. It's only a couple acres but very different from anything else in Ontario - also the colours change dramatically with the light - pick a day with sun and clouds for maximum enjoyment.
The Cheltenham Badlands "exhibit the reddish hue of the Queenston Shale that forms them. It is the presence of iron oxide in the shale that accounts for the red colour. The narrow greenish bands that can be seen throughout the shale are due to the change of red iron oxide (iron III) to green iron oxide (iron II) brought on by the circulating groundwater."...more
In less than a 100 years we've progressed from throwing bricks and hammers to launching nuclear ICBMs capable of killing pretty much everything. Who said the past didn't go anywhere.
If you're looking for adventures in urban exploration there are a number of websites outlining various options - a good place to start might be here. Less urban adventures can be found here.