Hi Goober,
Lisbon is definitely one of the most beautiful parts of
Portugal specially during the summer. A must see attraction in
Lisbon is its many museums such as the
Gulbenkian Museum, Berardo Museum of Modern and Contemporary Art and the National Azulejo Museum.
June is probably one of the best times to enjoy Lisbon as it is a festive month when locals celebrate their saints and the streets and quarters become alive. A famous quarter worth visiting is the
Alfama which is one the oldest part of Portugal.
A trip to Lisbon would not be complete without
visiting the Tagus River where there are so many historical monuments to see such as the
Torre de Belem and the Mosteiro dos Jeronimos.
Hope this helps
VacationBuddy