Two more pictures from today's wandering around Copenhagen:
The building on the left is the Tycho Brahe Planetarium. Brahe is a famous Danish astronomer; one of the last astronomers not to use a telescope! His student, Johannes Kepler, was first to correctly describe planetary motions as elliptical orbits, and Brahe's accurate observations and published star charts were essential for later discoveries. We saw one of his notebooks at the Royal Library earlier in the afternoon.
The building on the right is just nearby, and had a mural I liked.
Both sit by the Sankt Jørgens Sø, an artificial lake. This chain of lakes was originally a stream. Then it was dammed to become a mill pond. Two more lakes were added as moats, for fortifying the city. Later they were dug deeper and used as reservoirs. Now they're just parks, with walking and bike trails around them, but their artificial nature makes them look on the map like a filled-in canal or a strangely inland portion of the harbor. In the future, the lakes may become detention basins to capture heavy runoff from increased rain, attributed to global warming.