Original: It connects the Kurfürstliches Schloss with the Poppelsdorfer Schloss , a palace that was built as a resort to prince-electors in the first half of the 18th century , and whose grounds are now a botanical garden ( the Botanischer Garten Bonn ) .
Simplified: The Poppelsdorfer Allee , an alley flanked by chestnut trees , connects the Kurfürstliches Schloss with the Poppelsdorfer Schloss , a palace that was built as a resort to prince-electors in the first half of the 18th century .