Tennis

At the First Czech Lawn Tennis Club Praha at Stvanice Island (tel. 222-316-317; www.cltk.cz), you can play on the courts where Martina Navrátilová and Ivan Lendl trained. The rental rate is from 340Kc ($14) to 620Kc ($26) per hour per court. It's best to make a reservation if the weather's nice and for the morning (off-peak) hours.