beautiful city park on elagin island in saint petersburg

russia saint petersburg city peterburg spb peter town yelagin elagin island elaginskiy garden park summer day green tree lawn grass flower bed flowers white blue red salvia begonia ageratum bloom blossom blooming floral floristic floriculture horticulture travel tourism attraction outdoor nature landscape cityscape vacation holidays recreation landscaping gardening urban environment beautiful walking paths between colorful beds rest comfortable saintpetersburg sanktpeterburg