Discover Cascais, a gorgeous town on the Portugal Riviera, just half an hour from Lisbon. Here's our guide on the best things to do in Cascais, Portugal's best kept secret.rnDiscover Cascais, a gorgeous town on the Portugal Riviera, just half an hour from Lisbon. Here's our guide on the best things to do in Cascais, Portugal's best kept secret. | Cascais | Lisbon | Portugal | Things to do in Cascais | Cascais Portugal | Cascais must-sees | Day trips from Portugal | Beach towns in Portugal |