The Fisherman's Bastion (Halászbástya) in Budapest's castle district. The Halászbástya or Fisherman's Bastion is a terrace in neo-Gothic and . the Buda bank of the Danube, on the Castle hill in Budapest, around Matthias Church.
Fisherman’s Bastion (Halászbástya) : Castle Hill, Budapest, Hungary
Shell Grotto at Margate (UK) In 1835 Mr James Newlove lowered his young son Joshua into a hole in the ground that had appeared during the digging of a duck pond. Joshua emerged describing tunnels covered with shells. He had discovered the Shell Grotto.
The Colosseum or Coliseum, also known as the Flavian Amphitheatre is an elliptical amphitheatre in the centre of the city of Rome, Italy. Built of concrete and stone, it was the largest amphitheatre of the Roman Empire