Yet more practical, the Lord Of The Rings star had a hard helmet on and mirrored sunglasses to shield his eyes from the sunshine.
Orlando has been seen cycling through the town ever since he arrived in the country to start production in September.
The Nazis wiped out the town of Lidice, killing all the men and shipping women and children to concentration camps after Heydrich was assassinated in 1942 After Heydrich's funeral in Berlin - the biggest of its kind in Nazi Germany - he and his mother continued to live in the castle until approaching Red Army troops forced them in 1945 to head back into Germany, where he now lives.
In 1941, he was appointed as 'protector' of Bohemia and Moravia, the part of Czechoslovakia incorporated into the Third Reich.
Proving inseparable from his dog Mighty, the hunk has brought his pooch to Prague as he embarks on his latest filming venture.
He is filming a new eight-part fantasy series Carnival Row in Prague.
We all know about the Charles Bridge and Prague Castle, and whilst they’re obviously well worth a visit, Prague is full of quirky sights and interesting activities to give you something to really remember.
Many of these are even free, So, pick up your backpack and get out and see what Prague really has to offer: This street in Prague’s Mala Strana district is so narrow that it needs traffic lights to control the flow of pedestrians passing through it so that they can all fit, although we’re not sure what the punishment is for running a red light here.
And Orlando Bloom was making the most of his time in the picturesque part of the Czech Republic when he took a tour on his bike on Sunday.
The Pirates Of The Caribbean star, 40, showed off his gym-honed physique in form-fitting Lycra sports gear, looking expertly equipped in tinted shades and red riding shoes.