French tightrope walker Tatiana-Mosio Bongoga balances over the Vltava river to open a new circus in Prague, Czech Republic. The Prague Castle is in the background. (AP Photo/Petr David Josek)French tightrope walker Tatiana-Mosio Bongoga balances over the Vltava river during her performance to open a new circus in Prague, Czech Republic. (AP Photo/Petr David Josek)French tightrope walker Tatiana-Mosio Bongoga balances over the Vltava river to open a new circus in Prague, Czech Republic. The Prague Castle is in the background. (AP Photo/Petr David Josek)French tightrope walker Tatiana-Mosio Bongoga balances over the Vltava river during her performance to open a new circus in Prague, Czech Republic. (AP Photo/Petr David Josek)French tightrope walker Tatiana-Mosio Bongoga balances over the Vltava river during her performance to open a new circus in Prague, Czech Republic. (AP Photo/Petr David Josek)French tightrope walker Tatiana-Mosio Bongoga balances over the Vltava river to open a new circus in Prague, Czech Republic. The Prague Castle is in the background. (AP Photo/Petr David Josek)French tightrope walker Tatiana-Mosio Bongoga balances over the Vltava river to open a new circus in Prague, Czech Republic. The Prague Castle is in the background. (AP Photo/Petr David Josek)French tightrope walker Tatiana-Mosio Bongoga prepares for her performance over the Vltava river to open an international new circus festival in Prague, Czech Republic. (AP Photo/Petr David Josek)