The Trappenseeschlösschen is leased to an auctioneer, so you can visit the building rarely. The place is of course pretty pretty, right next to it is a restaurant with beer garden ... de.wikipedia.org/wiki/Trappenseeschl%C3%B6sschen
The Hardtwaldsee is a popular wetland habitat for toads, which provide plenty of offspring here every year. At the right time of year (can sometimes be observed from March onwards) …